>>56149489XY aren't bad but they are really fucking mediocre. there's not a single thing they do that some other pokemon game doesn't do better. even megas, the big flashy gimmick of the generation, were handled infinitely better in ORAS.
XY are bare minimum pokemon games. they were impressive at the time for being 3D and having good online, but there are other 3D games now and the online is dead.