I know, it's just making the ships perfect in this manner wasn't something I was intending. At best the Tyrant would just be a very cheap base cost cruiser for the IN. You lose out on the firepower, but you lose the nova cannon in exchange for torps, and gain a bit of range that could possibly be useful.
I think making the base cost 175 is a decent thing to do, people would buy it for that much, simply wanting a cheap cruiser. With a 15 point upgrade to 45cm it will keep that cost the same (190 for all 45cm) and make the upgrade less appealing.