Ok this is what I have seen so far. Hope it helps!!!
Fleet restrictions:
Tobari: One Heavy Escort for every escort
Dakeshi: ?
Raanturi: one per xx of point in fleet?
Mas'ata: None
Benthaki: None under 1000. One for a battle 1000-1500. A second for 1501-2000, etc
Vegians: Two destroyers for every light cruiser
Intilzan: None
Thrrak: None? Can't be in squadrons of course.
Scythant: Two escorts for every light cruiser
Concerns:
Tobari seem to be pretty solid

Price could be reduced by 5 pts each but that's about it.
Dakeshi: Need to put some kind of weapon on him to encourage him to get into fight. Playing with him in the attack constitutes the Swarmship squadron hugging the edge of the table and never being threatened in the battle. Give him one WB at 45cm F arc? Good support ship when I used it this way. Up Price to 40 pts.
Raanturi cruisers are amazing!

It's a comparable ship to almost all others in the game IMO. Points of clarification needed on whether the die of 6 going through shields, how do they interact with Eldar, Necron, Tyranid shielding/saving?
Mas'ata. Ok where do I begin? I played two games with these guys and both went.... well... First, no range limit on the laser grid means when playing the 'lone wolf' rules for small games make these broken as they hug the edge of the table and with no range the beams target anyone in the middle of the board!. Cap it say at around 90cm? Second, when using normal squadron rules, these become aweful. At best they are a second wave weapon. Too easily destroyed if they go out on their own for any reason. (Think about it, with no range to their weapons and staying within 15cm of each other, they have to physically surround a vessel making them easy targets on the way in). Plenty of ways to remedy this though (pick one!): 45cm movement, let them be at least 30 or 45cm away from each other instead of 15cm, roll 6 D6 for AAF but may use the grid, increase shield to 2, give them holofields but with only a 4+ save, etc...
Benthaki: Not sure how they should be fielded so I didn't use this one....
Vegian flak cannons. Is the D6 roll of 6 done twice? When ship is initially attacked and it has no shields AND when it moves in subsequent movement phase? I think it should because it gives this ship a bit more punch. Otherwise those Flak Cannons are really useless against ships since only one dice roll is used for moving through any number of blast markers.
Intilzan seem to be good

Thrrak. Notes on Missile Battery are different than weapons stats. I assumed the notes were supposed to say "...hit by a Strength D3+1 torpedo salvo..."? Also, I played them so they didn't have to reload ordnance to fire the weapon, was this correct?
Scythant bladefield. How about the Bladefield hits armor like a WB but it ignores shields of all kinds and every hit is automatically a critical? That REALLY encourages them to close to base-to-base to use it! Another idea is the Bladefield attacks D3 amount of times with above abilities!
-Zhukov