Yes, true, but all the new items are off limits to the old characters and the old items are off limits to the new Romulan characters.
So everyone who wants to upgrade is Romulan will have to do so from scratch.
Starting with basics like inventory/bank space, ship slots, BO slots to uniforms, doffs, etc and of course ships.
Well, Depending on which faction you ally with you can probably claim old c-store ships, but that`s about it.
So in a way if you don't see it as a new store, it's at least a new department IN the store.