Since there's nothing we can do but wait for the RI's Science Ship Only universal console, I figured we might as well ask for more of the same.
Cruiser only universal consoles
Escort only universal consoles
And of course, have these open to the klinks (maybe the klinks can equip them in any ship, but you can only have one? Hell, give them a special console slot or something for this type of console)
An idea I had for a cruiser only universal console would be, basically, the Corbomite Reflector. Or rather, the copy of it that appears on NPC cruisers. The thing that gives them total damage immunity for 15 seconds or so.
For escorts, maybe a special torpedo launcher console that would take whatever torps they have equipped (except Pengs and heavy torps) and let them fire two of them at once as a baseline (Basically doubling the amount fired) , at the cost of a narrower firing cone. Based on the Defiant's signature two quantum attack.