As to the OP, I do agree the Galaxy ship at this moment is pretty good I don't see why a change is necessary.
using it handycapes you for healing over a star cruiser, and handycaps you for damage over an assault cruiser. it excels at nothing, turns the worst, and it's special ability makes it more fragile wile not improving its combat ability, only its turn rate.
omfg, im JUST talking about the galaxy R. not your precises galaxy X, with an actual good console setup, death ray, cloak, and the ability to actually kill things.
If in reference only to the Galaxy-R... yeah, it is fairly useless.
It can tank, but ONLY when as 1 ship (not separated). Can't heal effectively. Can't turn without sacrificing half of its defensive power. Offensive power (both separated and not) irrelevant to the Galaxy-X, Sovereign, and... well, everything except Star Cruiser.
It does have the advantage of 2x Antimatter Spread (only if you also purchase the Venture upgrade) however, but on a 3min cooldown each, this is a bit of a laughable point.
having all those engineering abilities leads to more global cool down issues then a star cruiser has. besides flying around without the saucer for a nice turn rate for a wile, there is no practical reason to fly an R over a star cruiser, even if dealing damage is your goal. you have a bit more science station leeway and could slot 2 ensign heals and an offensive power in the lt science station. the galaxy R really is worse at everything