actaully at times they have enough players, but not everyone who plays gta even plays mta yet, so making it bigger could help
but those could be features allowed to be set up by who is running server
so not ever server would allow that many but the ones that do u can play on.
and the comunity like featurs with money and all could be added to mta and they could only apply to certain game types or whatever, but it would be a cool feature