I liked playing the rebuy tournaments. You can get another chance if you are unlucky or do something stupid.
But some just abuse the rebuy.
ALL IN - LOSE - REBUY and repeat repeat repeat repeat - until they get lucky or we get to the break
It is really boring.
Also means that some lucky players can end up with a very large stack of chips
How about limiting the number of rebuys?
Or maybe reducing the rebuy amount each time?