Add me to the mirror ha'nom list. The normal version isn't that great and I think the loss of tac boff abilities on the mirror is, generally speaking, not an improvement.
I was fortunate and someone bought the legacy pack for me but I think most of it was a waste. The valdore console is definitely worth it. Just about everything else is a write off. I like the d'd (cos it's so Romulan) and though I don't fly it much I do like the T'varo and have happily recommended it to others.
My perspective is as a sci captain though. I've basically got too much to choose from for the very small amount of time I spend in tac ships, and no choice at all in sci ships. In that light the legacy pack doesn't come off well.
I kinda regret buying the Romulan Legacy Pack. Of course, when you're just starting out, it's impossible to know what will be useful in the end. The only thing useful left from the pack at endgame is the Valdore console.