I think the bet-frames should be locked in place after the first two turns. The room op should be unable to change the frames to 300 to put in a last second bet in a situation where who will win is obvious. I made a report about someone doing it here
It's unfair and defeats the purpose of the bet-frames feature.

I think any changes done to the bet-frames after the first two turns, (or possibly any time where the current bet-frames has expired) should become effective after the match ends.

Also, I think there should be an "auto-cancel bets" command that will automatically cancel bets if a given amount of tc is not countered. (Or if no tc is countered at all) The amount of tc could be set as a percentage of the highest total amount bet on one player.

For example:

Pindar set auto-cancel to 10%
Hampa placed a 2000 tc bet on player1
Erth placed a 50 tc bet on player2
Skulfuk placed a 100 tc bet on player1
All bets canceled. Counter was less than 10%

the total on player1 was 2100, and the total for player2 was 50, only a 2% counter, not worth it for hampa or skulfuk.