The usual oldies but goodies:
X-Wing/TIE Fighter: Love space sims, looking forward to Star Citizen, but I want my assault gunboat/A Wing back, damnit! I hope the F2P one they are doing turns out to be good.
FFVII: This one in perticular could use a remake, not because FFVI, VI, or V sucks per say (all of them are classics, especially VI), but because PS1 era polygons really show their age in a bad way. Good pixel art is still art, but polygons look bad aged most of the time.
Secret of Mana / SD3 : Two great action RPGs ahead of their time, could use a high definition art redo and update for online with friends. Its a shame that the Mana franchise has gone down the tubes since Legends, as this series was great back in the day.
Breath of Fire : Speaking of run into the ground franchises, this game hit its stride at 3 and never really got better (though you could argue 4 was decent). This series deserves better than a mobile phone micro transaction nickel and dime fest
Allegiance: the greatest flight sim multi player 100 v 100 game with fighters, capital ships, and multi system madness nobody ever heard of. If somebody slapped a coat of Star Wars paint on it, Allegiance would have been considered the greatest space sim online game ever made. Hey Luccas Arts/EA, wanna make some money? Combine this and X-Wing/TIE Fighter in Frost Byte engine, you're welcome.