Okay this might be biased since well it's coming from a sniper main but I mean some weapons do need a nerf. Welp lets begin.
(note: don't take this literally and this buff and nerfs idea are most likely going to do more bad than good.)
Autos:
Mini-G: I dunno really, stats seem fine in both shop and ingame maybe decrease its rev up time by 2 milliseconds????
Ga3a: The Ga3a is a intersting weapon because its a decades old automatic-rifle and Warmerise is a futristic game, getting back to the topic the G3 is weak basically. What I believe is the fair buff for this monster is +5 dmg for bodyshots, legs shots can stay and headshots +5 also.
BlastGun: This weapon seems "balanced" in my own opinion since well its smg, shoot faster but do less dmg, but what I believe Max could do is nerf the reserve ammo.
Carbine: There is nothing wrong with it, its balanced and its like the AK47 in CS:GO. High damage but high recoil.
G36: The G36 does deserve a nerf since its basically a big brother of the Carbine. What I believe should be done is just increase the recoil and nothing else.
Thats all thanks for reading this dumpster fire of a nerf list