I think there are many peoples who wants to play an active infiltrator, instead of camping from far away with a sniper rifle and getting bored fast. Then why dont you make an alternative to first slot? Like a more powerful melee weapon, or the ability to run faster when no 1st weapon is equipped,lighter, faster. Now that after update 2 i can see cloaked infiltrators almost better then uncloaked ones, they really need some love
but if i wanna use SMG on an infiltrator, i feel like an heavy or light assault with a missing heavy shield\ jetpack.
I think we need more melee weapons in general. It seems like they set it up so you can change melee weapons, we just don't have any options. Personally, I want to see a MAX with a huge *** sword. Of course, for larger weapons you should have to manually equip it.