They already sort of did a Battle Royale type movie. It starred a WWE wrestler, guess how good it was?
In any case, remakes and sequals are nothing new. Only sequal I've been really excited for in the past couple years was
Clerks II. Other than that they usually make good entertainment fodder, but not much else.
Some remakes can be pretty good especially if they are adapted from foreign films so that there isn't already an established Hollywood version, but most of the time they just turn out to be lousy horror remakes.