The pacts all involve general things that are shared by all races. Specific things like phase gate sharing don't really fit the design of pacts. However, a seperate research that allows allies to share these makes sense. Advent should get the artifact sharing research people want as well, seeing as Advent and Visari got shorted one new research in Diplomacy compared to TEC.
I think the TEC missile pact and Visari repair pact should be switched; TEC is actually better at repairing in-gme, and Visari are the missile masters. If Ironclad is open to major changes I also think the tactical pact should be junked in favour of something else. There's nothing about Visari design that really suggests they'd be interested on focusing on how to support more turrets and hanger bays, nor is it a very useful pact beyond getting two superweapons at one planet. Something about starbases would be nice.