I realize that MWO probably can't/shouldn't invent weapons that aren't in the BattleTech universe, but there are at least a few that existed in earlier MW games but not now.
One example (IIRC) is called the Arrow IV which was a super-long-range weapon, but I am sure there are many others. Arrow IV wouldn't be great on the current maps, but that could change.
Honestly weapon diversity is probably one of the most important things for keeping gameplay interesting.
EXTRA CREDIT: Tanks and elementals.
EXTRA CREDIT 2: Rescue a few of the existing weapons that aren't so good. I haven't been able to put Machine Guns to good enough use, for example. (If elementals existed that might change since I think machine guns are better at hitting them.)
Edited by northpow, 20 April 2016 - 01:08 PM.