I'd be OK with this console being used on other ships. I'm more OK with this being on cruisers since they are larger and have more room to store torpedoes. Of course that only matters if you believe that the number of torpedoes a ship will carry is finite. But yeah that console isn't OP so make it usable buy other ships.
Tier 5 ships have their console unique to their ship and fleet ship if its applies...I don't see a reason why should give one ship special treatment.
Some of the Consoles should only be for specific ships. An example would be the saucer seperation console, you can't use that on a Defiant because there is no Saucer section to seperate. But all ships can have torpedo launchers so they could all fire large vollies of torpedoes as the Armitage does.
The problem with allowing it to be mounted on any otehr ships is that the Akira-class (from which the Armitage is derived) was the only Starfleet ship to even have port and starboard mounted torpedo tubes, making it the only Starfleet ship to have full 360-degree torpedo coverage.
That being said, I wouldnt arge with it if I could have a Quantum Torpedo varient to put on my Sovereign Refit along side the Wide-arc launcher.
Another way to screw KDF no doubt, not only would any ship have cloak which not even all KDF ships have cloak, we have no good worth while consoles at Tier 5. But silly me who cares about the KDF at all.