If all the Brel can do is fire torpedoes while cloaked at the cost of a sci console and 4k of hull, no one will use it.

I would go a different route and keep the weaker hull + remove an engineering console (basically 18 less resistance) + possibly knock shields down to a .75 modifier from .8 . In return, give the Brel an extra ensign universal. That would be a tough decision.

Keep the enhanced cloak with firing torpedoes while cloaked, as it really doesnt do anything.