I like the symbol one best.
It would be funny if you changed the symbols into an ancient-cave drawing of a warppoint creation.
Say a starburst, some wavy lines and some alien icons.
Training is OK, but I'd expect it would be good as a boarding defense component. One-per-ship, and reduced to 2KT, adding 5 defense points to the basic 4 per crew quarters.
If you put it in the same familily as MC's then you can't use an MC and the shooting range together...
Or maybe if it was an upgraded crew quarters: it has the crew quarters ability, takes up 7KT, and provides the extra boarding defense.
PS: can I see a mini for Goo5?