I wish people wouldn't judge right off the bat how I would choose to use it or simply decide they know better. It's fine if you like it and I respect that. It's less fine to just look down on someone and state thier opinion as lacking.
I've seen no indication of what the ship is actually meant to be like. I'm not a mind reader - I don't get to assume correctly what a Dev is thinking when he comes up with a Boff layout. People seem to claim this is an escort - well, while I have some raider expectations from it because they said in one of thier blogs that the T'varo would suit the raider playstyle the closest i don't go with the foregone conclusion that this is going to be used mainly as an escort.
There's one type of ship in the game which are escorts, and in general they belong to the Federation, and have their own playstyle. I don't expect these to play like Federation ships. The singularity power and battle cloaks along say this much to me.
You want to talk Boff layouts, though? I'll oblige. When I look at the T'varo, here's what I picture:
Cmd Tac: Tactical Team 1, Cannon Rapid Fire 1, Beam Overload 3, Attack Pattern Omega 3 LtC Universal (Tac): Tactical Team 1, Torpedo High Yield 2, Torpedo High Yield 3 Ens Tac: (no idea) Lt Eng: Emergency Power to Shields 1, Auxiliary to Structural Integrity 1 Lt Sci: Polarize Hull 1, Tractor Beam 2
Here, I'm picturing a spike damage build. Probably PvP oriented, with an armament like antiproton dual beams, dual heavy cannons, quantum torpedoes and turrets out back. Not something that's around to have a firefight so much as uncloak, claim the kill, and withdraw to rinse repeat. I have no clue what I'd want else for my Ens Tac since I already mostly covered my needs in the other two, and Torpedo High Yield 2 even feels a bit superficial so adding another High Yield 1 seems rather redundant and I don't have much use for a Beam Overload 1 - it's not like I'll make a second pass before circumstances (and cooldowns) favor me better.
So, I end up wishing that the Ensign Tac would be an Ensign Sci so I could have a little more of those going around. Maybe I'd keep Tractor Beam at 1 and pick another power like Hazard Emitters 2 for some HoT and extinguish any plasma fires.
Then... let's say I mostly go with the same idea of quick single kill (because I don't see this as a cannon escort), but switch the universal to engineering. I got for more stamina, ways to boost my weapon power to go well with beam overload and some help to ease any escapes.
Cmd Tac: Tactical Team 1, Torpedo High Yield 2, Beam Overload 3, Attack Pattern Omega 3 Ens Tac: Tactical Team 1 Lt Eng: Engineering Team, Auxiliary to Structural Integrity 1 LtC Universal (Eng): Emergency Power to Shields 1, Reverse Shield Polarity, Emergency Power to Weapon 3 Lt Sci: Polarize Hull 1, Tractor Beam 2
Or, perhaps, I instead go sciency.
Cmd Tac: Tactical Team 1, Torpedo High Yield 2, Beam Overload 3, Attack Pattern Omega 3 Ens Tac: Tactical Team 1 Lt Eng: Emergency Power to Shields 1, Auxiliary to Structural Integrity 1 Lt Sci: Polarize Hull 1, Hazard Emitters 2 LtC Universal (Sci): Tractor Beam 1, Jam Sensors 2, Photonic Shockwave 1
I do end up with a nice bag of tricks but the Ens Tac still has the least presence. If it had been an Ens Sci, I could've fit something like Transfer Shield Strength (which is, IMHO more useful than a second Tac Team).
I can even do another one. Let's say this time, I'm going a bit more DPSy, because I'm just against PvE content. I go back to making the universal station a tactical one, but put in power that take care of larger groups. Maybe even use this for STFs.
Cmd Tac: Beam Fire at Will 1, Cannon Scatter Volley 1, Cannon Scatter Volley 2, Attack Pattern Omega 3 LtC Universal (Tac): Beam Fire at Will 1, Torpedo Spread 2, Torpedo Spread 3 Ens Tac: Tactical Team 1 Lt Eng: Emergency Power to Shields 1, Auxiliary to Structural Integrity 1 Lt Sci: Polarize Hull 1, Hazard Emitters 2
Here, I'm kind of wishing I could've managed to fit Transfer Shield Strength in my science powers, since I'd likely be cloaked significantly less while trying to do a DPS role. I even managed to pair most of my weapon powers, though if I had one less ensign power I'd probably ditch one BFaW in favor of TT1 for the Borg Boarding Party debuff.
* * *
So, overall, this is kind of why I don't see that much usefulness from the Ens Tac station. Kind of like the Defiant and Armitage, it seems annoying to me. It's there, but it doesn't end end being all that well used. That's the beef I have against it.
Also, considering warbirds will be stealthier with higher aux power, it seems to build in a good synergy with science powers. Turning that station into an Ens Sci just seems to play well into the Romulan subterfuge/trickery/science bit better, which is also why I'm advocating it.
Right now isn't bad. Even I can sort of make it work (The LtC universal being turned to science surprised me in its appeal, even). But it doesn't feel ideal for a warbird, which is where I'm trying to come from. And perceptions of 4 DHC escorts didn't even compute in my head, even.