you can't "just play legit". you need to gather alot of people to be able to play acquisition and dlc modes since the majority of the population are sabo noobs who refuse to queue anything other than sabotage. I'd advise anyone to message him if you have MAG on your profile and want a chance to plat/100% it before the servers close.
Have you ever organized a boost session with 12 people? How about 24 people? I have, and the more people you get the more out of control it's gets. MAG would require a hell of a lot more people then that, and how would you go about boosting it exactly? A large amount of people won't listen to instruction even if it's benefits them in the end, people are impatient and selfish when it comes to boosting and will step over you to get there's done. MAG was an interesting concept but poorly executed due to the minimum amount of people you need to start a match.