The championship warfare still needs a lot of tweaking.

The ticket prices are too low for some items, like leader cards and bloodstorm's card.
Even a spectator can win up to 3 or 4 leader cards just by betting normally.

The new heroes' cards are not part of the choices to be redeemed yet.

I also believe that there should be a variety of prizes for the top winners. As it is, all the top 8 got the same amount of leader cards.
There should be a different number for the 8th placer and the 1st or 2nd placer.

Betting wins seem to big, as you win 1/4 of what the match winner gains, even if you don't use gems to win.