For SMGs you'd have to make minigun battle saddles that shoot small calibre ammo. If they were in the game, I'd take them.
There is some way to make bullets that have effects when they hit, but I don't recall much details. A needler pistol should be possible. I think the masterwork mod has some reactions to coat ammunition with poison.
> Slug shotguns could be cool, a single, extremely dense bullet fired slowly. Would that be too similar to large caliber weapons?
AMRs shoot a larger and heavier bullet faster than the rifles. After some thinking about it, I'm against slug shotguns; they would be too much like combat rifles.
> I do think we need some more variety in guns, what we have now is pretty limited and not that useful.
I think that two or three energy weapon variants on top of what we have would be just fine and that we have enough variety. With more weapon types, we would have to juggle more types of ammo. There is also the possibility for a third progression of ranged weapon skill (Blowguns), but I'd reserve that for Energy Weapons.
This mod is already so complex that I need guides and a text editor with RAWs open to play it. Sometimes less (complexity) is more (playability).
> Does anyone have any suggestions regarding tin? Is it best used to make bronze or pewter or just used by itself to make bins?
Use plywood bins and barrels.
Any metal or stone is much heavier. Since scrap is also an ore of tin, tin is not that useful. I'd just use it to make bronze and save on scrap. Bronze is good for mechanisms, bulk amounts of security armour and some other things.
Fallout 2 and Fallout Tactics had Needlers too.
EDIT:
> Seeing that you guys talk a lot about guns and ammo: I just tested all possible tags from Putnams projectileexpansion plugin, maybe you can use it for something.
Lol, most of it is useless or overpowered, but some things are interesting just for the lolz of it:
Lavamist + large flowsize -> mini-nuke / balefire egg.
Lavamist -> Would be nice for master destruction spell.
Web -> Would be nice for adept Alteration spell. A web gun similar to what some police have would also be good.
> DFHACK_GAS_UNDIRECTED: No damage, but can carry syndromes.
Combined with flowsize 1 this may be relevant, but I think there was a way to apply syndromes to ammo months ago.
> make smoke grenades with an unconciousness syndrome
Or paralysing or poison needles.