As of this point, it has become apparent that the Vasari are horrendously OP and while I acknowledge this, I would like to direct attention to two primary things that I have concern with and they both involve capabilities that the Vasari have that allow them things in unlimited quantities. Compared to other issues the Vasari have, these are relatively minor, but they are still issues IMO.
1. Unlimited Greater Nanite Swarms
Due to the fact that the once the Rankulas hits level six, it can spawn Greater Nanite Swarms which have no duration and can phase jump, you effectively have infinite frigates. For best effect, station the Rankulas near a star or Advent AM regeneration. Then, just spawn to your heart's content. My issue here is that they are decently powerful frigates that come at no cost to the user aside from AM, but that regenerates.
Maybe it's just me, but it larger maps with multiple star systems, I feel like if there's a lot of turtling involved, it's possible that someone could suddenly jump in 2000 fleet supply plus a ton of additional GNS's.
If nanite swarms just lacked a phase drive, I think I'd be alright with them because you wouldn't be able to make infinitely many anymore because creating one uses all other nanite swarms in the gravity well, including other GNS's.
2. Unlimited Orky Tax and Trade Income
Due to the fact that Orkies can be phase jumped now, economically designed Orkies can now be massed on rear worlds. Provided you have a sufficiently large trade chain, you can basically get unlimited credits by building Orkies and then jumping them to other worlds. The reason for this is that while additional Orkies in a gravity well may be disabled in some regards, their trade income and tax income are not. Thus, someone could easily spam Orkies into a rear world and get unlimited credit income because unlike all other players, they are no longer limited by the number of gravity wells on the map to get their income. They can get infinite money.
I'm not really sure how to solve this, because in smaller quantities it makes sense, it's just that there is the potential for a Vasari player to simply spam economic Orkies.