On topic - I think the Imperial Cycle made the game much richer. Every clan (except for maybe Dragon and Unicorn) has multiple competitive deck archetypes. Given the extremely limited card pool, that is actually rather impressive.
I am not sure why there is so much griping over Policy Debate. Yes, it should probably have been limited in some way, but it's really not the be-all, end-all that some here seem to think it is. You are trading a card for your opponent's best card, and that is assuming you can set up a bully duel situation which isn't easy out of most clans.
I, personally, think that Feast or Famine, Pathfinder's Blade, and Talisman of the Sun are bigger problem cards than Policy Debate.