So people want a zombie dlc, some people say it's over done, What about a monkey invasion dlc? Sorta like a spoof on Rise of the planet of the apes, with maybe some references to the old ape movies.
Here's how it would go down: The monkeys from the humane labs escape after being testing on by the IAA, The IAA were testing a new Unstable "Perfume" It gave the monkeys a boost intelligence, enough to drive cars and use guns.
The monkeys use the intelligence and go free the chimps from that one movie on the movie lot, Backlot City, the monkeys use the perfume the iaa made on the chimps and they run wild in San Andreas taking over, It's up to Michael Franklin and Trevor to stop them! And for online people it's up to YOU to stop them.
The monkeys could even use it on other animals causing them to go wild!