While I'm glad they upped the number from that deplorable 16, 24 still isn't enough for my tastes.
Is there a way to increase the number, or is it some kind of hard limit?
As with the PSX version, it's technically -possible- but far too much of a pain for anyone to want to mess with it. Would require an awful lot of rewriting, reorganizing, and all on a version of the game that the most capable of hands really just don't touch all that deeply. I would expect it to not happen, but not guarantee it.