Just as a matter of thought...
I really like the look of the Insurrectionist ships in this mod, and I was wondering if those could be reintegrated into the main UNSC faction.
As a general rule, I always like more fleet variety, and the Insurrectionist ships feel as though they could fill some useful early-game niches. Specifically:
1. The Eion Carrier: It's always bothered me some how the UNSC have no mainstream fleet support until Tier 4, and I really like the look of the Eion. I think that it could be really useful to have as a Tier 2 or 3 ship, with the Athens bumped up to 5 for balance's sake. It would fill the niche of a small escort carrier, taking up 12 or 14 fleet slots and packing 2 squadrons of aircraft, with much more limited offensive capability than the Athens. Not sure how to price it cost-wise.
(On a general balance note, can we bump up the price on the Athens a little? It's easy to pump out a lot of those things very quickly, and they're comfortably the UNSC's best non-capital ship.)
2. The Mako Corvette: I really like this adorable little ship. I think it could fill a nice Tier 1 niche somewhere - a light, fast and cheap offensive ship that can be easily deployed in large numbers. Have it take up 5 fleet and make it faster than most anything else in the fleet, and ensure that it's lightly-armed (ideally, the only ship in the fleet without a MAC). Basically, something to deploy to fill out alongside your Paris frigates when you're rushing planets. Also, for preference, have it move like Corvettes do in Rebellion, although I do remember hearing that there are some bugs with that in SOTP.
Otherwise, great mod! I'm loving the current state of balance, especially the DPS numbers - it means that you really have to be tactical in how you fight. My only real request would be to give the Covenant some way of dealing with ODPs - a properly-fortified UNSC planet is basically invulnerable, in my experience. That, or make the ODPs even more prohibitively expensive than they are (and maybe have them take up more than 1 tactical slot? At this point, I can comfortably put ~15 ODPs facing one phase lane, and that's a damned intimidating sight).
Thoughts generally, everyone?