I have a couple suggestions for the op here.
1- Look at the racial bonuses and feats to help suss out potentially favored weapons for a race. With Dragonborn, for example, they get bonuses to STR and CHA, which doesn't help much. However, they also get a LOT of benefits from a decent-to-high CON score, which means that Axes might be a good fit.
2- As a piece of general advice for dealing with your players constnat requests for info, check out the section in the DMG2 about collaborative storytelling. While it might be a bit awkward at first, it would take some of the pressure off you to come up with minute details while simultaneously engaging them more in the story and world building.