I'd like to use goli only enforcer... I've got all skill designs but i use half of the time enforcer... But if you want a skill design go for diminisher the ability is fine but not very usefull when you have butterfly formation but i like the design of it.
Aegis is for noobies and if you are much alone it isn't such as good as the goli because you have 5 less lasers...
Although if you want to be a team player get the aegis.