why change the rules and how the game is played,,, for the convenience of keeping slow irritating players in the tournaments.
just tell them they are not welcome to play unless they keep up to the speed of the other players and if they dont or cant they will be punished with losses of games or worse. after the first warning.
it is easy for a t.d. to just say sorry you cant come, or when they are playing you are warned to play faster or you lose the game you are in next time i see you playing slow.
after forfeiting a game or two they will learn or leave. and if its their lively hood they will get in the program quickly.
all sports and tournaments have a penalty for playing too slow except for pool. in places with a shot clock but that shot clock gives too much time for individual shots and slow players take full time each shot which slows it down anyway.
faster play makes for more people paying for seats or streaming. so all factors benefit.