1. Introduce game changing heroes so that the actual number of choices of heroes that can possibly win is limited more and more.
2. add quests in events that require you to use heroes other than the aforementioned heroes
3. restrict matchmaking for levels 70s such that no matter what upper tier you're in, all three choices are essentially the same in hero power.
4. require streaks for advancement that are no longer possible for any but the top 150 or so players.
5. NOT FIX THE BUG THAT STOPS STREAKS BY CRASHING GAME RIGHT WHEN YOU ENTER THE MATCH.