Aurora and Final Fantasy V. Hmmm, that's a doozy to try and mix.
Instead of four people, you operate a small fleet led by your four heroes (shades of Infinite Space here) backed up from your homeworld whose development you also get to guide. You don't get a standardized array of classes at all, but they are instead custom-designed down to individual weapons, armor, engines, or shards of crystal that grant new skills. You get new features for your ships through developing your equipment and exploring local space which contains four great crystals that control the local jump network that had been tapped for power by the Precursors, a long-fallen civilization who once ruled these stars. These crystals have begun shattering one after another due to mysterious causes definitely not in any way tied to all of them being linked to massive Precursor amplifying devices that were left running unattended ever since they died out, and you must fight through local autonomous warships, great ponderous ships once operated by the Precursors to reach them in time to prevent this. You fail, of course, and get thrown into a new sector of space somehow mysteriously both like and unlike your own home space. In total, you'll end up fighting your way through three sectors (1, 2, and 1+2 combined) against progressively more difficult foes until you finally must face down the Invaders who once tried to destroy the Precursors and forced them to rive their own empire in an attempt to trap the Invaders in a void without stars, from which they've been reaching out with small task forces sent through wormholes to manipulate events and bring about their return in full force.
Oh, and at least one major sequence will be a massive running battle between two fleets taking place over an
exceptionally long jump chain of stars against Invader admiral's goofy, irreverent XO.