Even I'm getting tired of fleet holdings, Cryptic, please no more fleet holdings until Season 9/Legacy Of <Insert Faction Name (IF they add another faction, which I think is coming in "Season 10" IF they add another faction, basically LOR 2.0 and probably the whole half-faction thing going on.)
I would much rather that they brought in a liberated Borg faction with the story behind the TNG episode that introduced Hugh. And possibly if they could manage it get Jeri Ryan to do some VO and bring her character Seven of Nine to STO. That would be far more awesome...
But liberated Borg aren't allied together, they rejoin their original faction after leaving the collective.
The mirror universe. We've not done much in it. The incursion to use to get skill points. A few episode missions here and there. A sector space encounter. That's about it. But why not a fleet holding?
The fleet holding exclusive items are easy to do. Terran empire and Klingon/Cardassian alliance DOFFs. New mirror costume unlocks(cause let's face it, the only mirror costume parts available are Fed-only, and 200-300 years out-of-date). Hell, we could even get fleet-tier mirror ships.
No idea where it would be located though, aside of course from in the mirror universe itself.
Well, as for location, i think there's a no-brainer ingame.
The Aenigma Nebula.
We already know its temporally loose, as it were. Why not dimensionally loose too?
Have a rift open up in the space map of the nebula that acts as a portal between the two universes.
Obviously a joint task force of sorts will sit on that rift, possibly setting up an additional sentry station to watch over things and respond if necessary.
The current Aenigma station can be off limits to all except veterans, just let the space map be open.
The fleet holding can be a module on the sentry station.
As for the fleet holding rewards, I agree with things like MU constume unlocks but think ships may be a bit op.
Perhaps open up a fleet holding store with access to the whole range of current MU ships maybe.
Where I'd like to see this holding focus is on devices and batteries, rather than consoles, ships or weapons.
There's a clear dearth of devices in the game. There are a few, but they're rare.
Batteries are ubiquitous and come in many flavours.
Thing about an MU holding is that they are, in many ways, the same as us. Tech, as such, wont be that different.
However, a difference in philosophical approach could mean a greater use of devices and a different approach to batteries.
What if batteries didnt boost power to a system, instead boosting a specific set of skills?
Seems to me the MU is an ideal place to expand some of the lesser relied upon game mechanisms.
I don't really want to see any more fleet holdings. I think we've got enough of a grind as it is. Why the hell would any of us want more? Very few fleets have maxed out as it is. As per your Terran Empire Ships:
Fleet Mirror Deep Space Science Vessel
BOFF Stations: Lieutenant Tactical, Ensign Engineering, Lieutenant Engineering, Lieutenant Commander Science, Commander Science
These would need to all be different from the start. It still amazes me that there is virtually no difference with a standard Star Cruiser and a Fleet Star Cruiser (yet there is with an Assault Cruiser). The Fleet Star Cruiser should come with a Lt. Cmd Science and an Ensign Science (reflecting that of the Assault Cruiser).
Edit: Ignore the above. I didn't read your Star Cruiser correctly.
Edit: @ darthmeow504: the mirror Adv escort is like the prime universe patrol escort and vice-versa. That's why I didn't include the 5 tac consoles. Aside from one console, I think the prime universe Fleet Patrol Escort has what you're looking for.