You know, we named the dog Indiana, heheh.
Well, from a players perspective, I’ve seen it done through pretty much every way mentioned here: a diplomatic ball, a personalized sub plot leading to a joining p with my guildmaster after his sub plot, he came to Mieres to hunt goblins and gnolls for cash as my father the Duke of Mieres offered a bounty on them so we can create a new province just south of Dhalier, along the coast. (My subplot is posted as Chapter 1 on my webpage here: Mieres Empire), I’ve been to “Milford’s” house before, one time he was a handler, ie he got groups of skilled individuals together (for me it was a job to steal from several noble houses), and the noble who is always looking for something whether it’s to collect, protect, hunt down an enemy/rival, ect. They have all been good means of meeting, or runnign into PC.
One other way to look at it is that the PCs don’t all start on the same team, and this is a variant on the sub plots theme really. They are recruited by rival lords/guilders and are sent to spy/infiltrate/sabotage/ect on the other lord/guilder. The idea here really is that the two groups slowly get to know each other as the people in the field while their employers sit back far away and give the orders. After a while and several encounters they just start going to the same bar and talking, cause their bosses dont really spy on them nor do they seem to care so much what they do in their free time, they are just supposed to be against each other. However, this would probably take a long time to pull off, and it would make the action a little more interesting, as 1 group sets up the traps, and plays defensive while the other group is under orders to attack, they would switch off as their lords command. Heheh, it can be fun either way and it takes off some of the workload onthe DM as he no longer has to figure everything out to set it against the PCs
he gets the other PCs to do it for him!
This can be expanded from the turff war idea to rival collectors looking for the same types of objects, sorta like the Nazis and Indiana then, to one lord being a pirate who loves to prey upon this one wealthy guilder out of contempt or maybe he just used to work for him and will never forgive him when the Lord took his wife as a slave when the pirate lord couldn’t pay his debt in time…
Ok, it also really depends on how evil your PCs generally like to be, if they’re a bunch of nieve goody goodies then these are prob not the best ideas for them, and going with Diplomacy, Milford’s or having them run into each other as they are ending up searching for some evil that has be plaguing the area.
If they are neutral, then just about any would apply, naturally, and it really offers the most freedom.
If they are evil, then it gets fun! They can be personal assasins to a powerful lord/guilder. or an up and comming one, who wants to eliminate some of his rivals after sending them on personal missions to test them out, he may have some of them start to work together for some of the harder missions, and then in a thrid mission have them all work together for a large target, possibly another powerful lord/guilder. Heheh, however their employer pays a bonus to the 1 assassin who kills his rival, each time, so who’s that gonna be? and who is going to be the number 1 assassin? heheh, infighting maybe common to prove your worth…
They can also be picked up along the way by a famous mercenary group, whom they looked up to when they were kids. Heheh, maybe their village/town was saved by em. The old kinder merc leader, well as kind as a merc leader could get, dies in battle (heheh, tho it looks like the sword struck him in the back first…) and a new darker leader takes over, and begins selling their services to a particually evil lord who sends them on some very diffcult missions culminating in one that only the PCs and probably the new merc leader survive and probably fail the mission. The PCs take their revenge upon the old merc leader, slowly, and then go to deal with the lord. Who of course would refuse to pay if they failed the mission, so they are left with nothing… heheh, if they are strong they should just take it from the lord, and from there maybe respawn the merc group or just hire out as a merc squad to deal with any problems a regent may have.
This idea is another variant on the sub plots theme, where several of the PCs already know each other via studying/working in the same place, however, they have yet to mix with the other groups of the PCs. This one depends on how balanced the party is, if it is not so balanced, ie more fighters, rogues or casters in the group, then it would work better. The arcane casters know each other from studying at the degrading Magic Academy in the Imperial City (they could be slight rivals as they vie for top honors, the divine casters/paladins either work at the same temple provided they all follow the same god, the fighters could be a part of a military unit for the lord, or hired to serve as bodyguards for a noble/guilder, the rogues could all be working for the same guild, as for rangers/druids they would probably know each other if they scouted/protected the same land or attended their druidic circle meetings.
From there you could have them start to meet up, like the clerics/paladins meet with the fighters as they are called in to heal the wounded from a large battle if the fighters were in a military unit together. The fighters, as bodyguards, could also meet the rogues when the rogues are sent to steal/assasinate ect, or if you want more friendly terms then the bodyguards would meet them as they both work for the same guilder just in different functions. The arcane spell casters would likely meet up with the others when they want to go look for some rare ingreedients or a special item they researched and call upon the guilder to hire out some help, and the wizard wouldnt be foolish enough not to gon on a dangerous mission without the aid of a cleric, so he would probably hire one out. Ect, ect, if allows for various above mentioned themes to come out and leads to PCs working together from the start, generally, and maybe they will see the benefit of eliminating some of the other PC teams so they don’t have to share the loot with them, heheh.
Overall, once you get them to “spill the same blood in the same mud,” they will generally stick together as a group.
The best source I bet you can find for more of these types of ideas is to go read up on some Fantasy books, and just look over the first few chapters if you dont want to buy em as they generally have the main characters meet up around then.