I'll be giving some own thoughts and opinions, what i've been inspired, and disgusted
HUMANSRifle, Chaingun, and Pulse would have secondary that fires and makes 90 - 120 degree arc, spreading the bullets in these directions. It may sound very stupid, and inpractical, but who knows? Maybe it can help in cramped situations against horde of smaller aliens. (and maybe unbalance the gameplay?)
Akimbo Blasters? lol. If so... then make second bit expensive... like 150 or 200 creds.
Painsaw overheat is bit too ridiculous. But if there is secondary attack that makes psaws range much shorter, but more deadly (twice the normal psaws damage), then it would consume painsaw and makin it overheat. But otherwise, NEVAR
Las Gun does 9 hp damage? (can't remember instantly, meh is n00b) Then i say it is big spike in my butt. Expert lasgunners can hit even the wildiest dretches on walls running. But maybe my hate to lasgunners as a dretch clouds my mind on this matter. But still....
Scopes for (almost) all guns? Hell yea. NO.
Or if you think scopes are cool and good thing, i suggest that we should buy them. Not install it to (almost) every gun.
Weapon butt hit. Good way to shove aliens that came too close. But it should be minimal damage attack with 1 sec disrupt for alien. And you can't immediatly shoot. More balanced in this way. But i would like punch more (left straight to goons maw FTW), and as stage comes to s3, you can get power gauntlet that deals more and stuns aliens bit more longer, but pays 100, and slows reload and makes aim bit harder.
Oh. And the Grenade should be renamed. It's not... grenade, more like a satchel charge or like it. Or simply, Bomb. Too costly for nade.

AND DON'T TOUCH TEH STAMINA! I like it now, it's just what i needed when 1.2gpp came out.
ALIENSDretch should be able to crawl on bsuits. Not much damage (4hp), but it annoys them, makin aiming and shooting bit hard. And teammates can try get it but rets would do the job. Also, latching to jettards would be good way to get them down,and deal 20 hp damage to naked jets. And latch stays until jetpack is turned off.
Aliens should evolve while near om, even if human is psawing om. But true, some building priority system would be good to prevent instant dropping to naked reac.
Flying alien would be cool, like korx server spitfire, but it wouldn't start copying it

Make something new, like one that has erratic flying pattern (harder to hit so to say), can latch jets, And can charge too, but different. It would depend on how fast you come. The higher you start, the more you deal, maybe even killing bsuit if done properly lol.
But makin flying alien class to 1.2 depends on our lovely devs. I doubt they will do it, maybe in next trem version, hehe.
And outta ideas currently, + writing on this seems to be hard, bouncing all time to upper text parts.
Maybe i do this to end. Or if i'm willing and care.
And keep Trem funny, chaotic and team depending game plz