cool color schemes! i like how you gave them more dull/neutral tones, since you don't see that too often with shinies but they look really good. i think crobat and nidoqueen are my favorites here, but that subtle color shift on zoroark is pretty cool too
seeing as how karen tends to go off on her own anyway, it'll probably be awhile before anyone even realizes she's dead. we'll probably still fight 8 members, just there'll be a "temporary" elite 8 member in karen's place
unfortunately, unlike reborn, rejuvenation doesn't have an online trading system. if you were to post your save file though, someone might be able to give you one via debug