Managed to get to 3000 in PvP facing only 2 teams - a grand total of 5 different troops out of nearly 400.
Every battle is Wisp, Wisp, Krystenax, Mab or Forest Troll, Kraken x2, Mab.
The reasons these are used is obvious with the new (albeit crap) algorithm. The AI cannot play these teams badly, as they endlessly loop whilst preventing the opposing team from doing so.
Can we please go back to some sort of strategy being employed?