Horde anSwarm were two of the reasons I modified Epic to use the base gamerules for monstr category selection, I still use te epic town set-up, but pick three monster categories as per non-epic. Personally I prefer it because a lot of monster categories affect your deckbilding strategy (high strenght against Golems versus swarm tactics against Bandits fr example.)
Good point. I like the idea of Epic, but I am NOT going to play without a horde. It's just too interesting a mechanic to sacrifice.
Besides, I played Horde in WoW. Undead Mage, FTW.