You should make it somehow easy to see which cards controlled by opponent are owned by you. Lands should be separate from his, creatures also separate and maybe a bit closer to your side, cards exiled by Karn or Oblivion Ring should not be completely under them and also keeping them sideways helps and so on.
WotC isn't really trying to drop prices with reprints. They either reprint cards in high cost sets (like modern masters) or they make reprints super rare, like the recent masterpieces. People were asking for reprints in the typical way, as rares in Standard sets. WotC said screw that and screw you.