AoE.
Think about it; it would make sense if Grenade-guns would come with a small AoE (nothing too crazy... like min damage of the equipped weapon with an attack skill, which checks duck-exp and would hit like couple mobs around the main target) and Shotguns with a very small AoE (like 1 mob right next to main target, 1m range and 1 other target hit only). I'm sure some Engineers, who still wield Grenade-guns, and Traders would welcome this effect in PvM at least, let alone mass-PvP.
I have no idea would this be possible to create, quite possibly not... so I'm just playing with the idea and perhaps someone has already created a similar topic... but anyway! What do you think, would this be silly or less-silly idea? No need for serious debate, this was just something that crossed my mind and I wanted to write it down somewhere