In response to the OP:
I would humbly disagree about the clothing. I think making some clothing - whatever looks coolest, like dusters, etc. - expensive would allow them to be used as status symbols. When you buy some clothing in MP that costs 500-1000 gold but does nothing, you're telling everyone else that you are so good you can blow 1000 gold on something that doesn't even help you.
I think a good scale for pricing clothing would be:
uncool, humble clothing (cheap) ---------------------------------> cool, stylish clothing (expensive)
I like the thought of making repeating rifles very expensive. That would allow the best players to become deadlier, true. But most weapons are ranged, and have relatively high damage, which means even good players can get killed quickly.
People have mentioned that they don't want MP to became a bullet fest, but rather encourage deliberate shooting. I think this is a good idea, and helps preserve the western feel of the game. I don't know that limiting bullets is the best way to accomplish this, though. I think making reloading take a while is a better way to accomplish this. So, if you empty your revolver as quickly as you can at someone and don't kill them, they'll be able to take their time aiming at you. If reloading isn't fast, I don't think spraying and praying will be a viable strategy.
Several people have mentioned the need to ensure accuracy isn't too high, so the game doesn't become a bunch of people sniping from long distances. I think that's important. Of course, map design to allow people to move around without being exposed to snipers at all times is important too.
I think there might be something else the mod makers might want to consider - bleeding damage after getting shot. Usually, bullets don't instantly kill. Even fatal shots can take minutes to kill. Therefore I think having weapon damage lowered from SP M&B and adding bleeding could create and interesting new dynamic. Bleeding damage could be just one hp per second and last longer if the damage was greater. Multiple shots would cause bleeding damage to 'stack'. So, in a shootout, you could have shot a person fatally, but they'll still be alive for a number of seconds before they succumb.
Another suggestion is having some stats be lowered if a person's HP was very low. So, if they just had 10 hp left, they'd have lower athletics, lower firearms skill, etc. Not enough to cripple them and make playing with low HP meaningless, just enough to effect them.
I think having dynamite damage people through walls might be good - it is an explosive, after all, and none of the wooden walls seem to be particularly thick.
I don't think there should be much melee combat at all. But in Warband, there's the option of hitting 'x' to change from ranged to melee mode for some ranged weapons, and I think that could be used to good affect.
Is there some way you could make buying a gun include the ammo, without buying ammo separately? It would allow more variety in buying weapons.
For game types, one type could be an escort mission, where players would have to push a cart across a map, and win when they get it to the 'end'. It could use the code from the siege tower movement.
CR