Colville suggests that starting in a tavern is a chance to show off the setting in a microcosm. Put folks there that represent various factions or attitudes prevalent in the setting. When I ran a Savage Pathfinder game and had my players start in a tavern, I had some incurious off-duty town guards, the dillettante son of the mayor. I couldn’t figure out a way to work in the diabolist church (I set my game in Cheliax), but I did have a choice of several “first jobs” for them to take.
Absent knowing anything else, and assuming most of the “usual” fantasy tropes are in place?
Either Savage Worlds, or Colville’s Draw Steel depending on how I feel and how my upcoming experimental play of the second one goes.