As i like doing crazy crap with PA....
http://pastebin.com/m1be10316 Also includes research tree etc.
Overview:
1) All races get a set of 8 basic ships (6 attack ships, 1 pod, 1 structure killer).
2) Each race then gets a set of unique ships (4 attack, 1 pod) which have features related to that race (Cloaking, EMP, Steal).
3) Race specific research needs to be completed before the unique units can be built.
4) All Meta Class have the same ETA to target, and -1 on defence ETA.
5) EMP is based on EMPArmor (aka Shield), so no more resistances.
I admit that I dont have a clue about ship stats tbh, but I think the general idea is there (Shield stats would need to be increased as it currently equals normal Armor) .
I did think of maybe allowing all techs to be used by anyone, but then each player would have 20 odd ships to try and work out which is best. Only way to combat that would be to decrease unique ships.