[emoman]

The problem with only putting in those basic guns you mentioned is the fact that many of era's current players are active because they are the ones that have those overpowered guns.
I'm not saying it's a bad idea because if anything it's a great idea, but this could change the player count for better or for worse. Personally I'd be playing era a lot more if the gun balance was fixed, but there is going to be a lot of QQ coming from the players so use to the control over the economy

e: TL;DR - Let there only be 3-4 guns like you said. It could drastically change the player count for better or worse but either way Era is dying and if things continue like they are now it's bound to go downhill anyway