I have an idea to improve spectator mode. Because it´s beside normal game very backward. My ideas are:
1) Make start screen similar to normal game, five levels of difficulty, number of match views instead of coins (for example), and arena or pvp can be too...
2) Everyone would choose if he agrees to be "monitored", in settings.
3) If you choose some level of difficulty in Spectator mode, you get a selection of pending matches aganist the choosen level.
4) That´s all.
Principle of this idea is, that it isn´t specified and directed only to pvp duels, but to all pending matches.