Just going to drop this in here:
3.They're not citizens in suit's that's Civil Protection.
4They're not rag-tag the MAA Is historically made up of Veterans pre-war and modern ones.
5. The "Cannon fodder" sent to die are the Penal battalions and ones sent specifically on suicide missions much like the 103rd.
As one of the people who did the lore for them: They are all of those things, absolutely. MAA is the lowest rung of the entire Overwatch ladder and the main functions they have is to:
1. Handle missions best executed with horde tactics
2. Handle missions of lesser importance that OTA need not waste themselves on
3. Secure and hold areas of minor importance
If OTA were quick and easy to make, MAA would not even exist. It's only purpose is to act as a expendable buffer in the vein of its more important Transhuman and Synthetic counterparts. Even CP's are more important than MAA relatively speaking, as CP's hold together cites, which are far more important than most thing MAA have a hand in holding.
Why cant the MAA be the military? Someone please tell me their argument so I may respond to is please.
Because the Combine are not stupid. They give MAA only what they absolutely need to complete a mission. They do not allow them to stockpile mass amounts of weapons, ammo and they barely allow them any vehicles at all. As, if they did, they would just rebel as they can exist independently from the Combine at that point. Besides, Combine don't give a shit about some random humans regardless. They aren't anything close to a military, as them being powerful is irrelevant to their purpose. They are an intentionally hamstrung group of Imperial Guard style hordes, designed for what was listed above and not a single ounce more.
I still fail to understand how the CT would be physically unable to properly run events but (and I really dont want this to come off as dickish) why would they be a member of the CT if they get burnt out making events?
Quick example as it isn't that complicated of a concept:
6 man expedition will likely take 1-2 weeks to setup. Depends on how many people you have to do it, but you have to; plan narrative, map, propping, internal events, outcomes, item distribution, event characters, organize CT members, coordinate with players etc.
Events are not easy. Cause any event worth having is not going to be done in a day. It's going to take loads of effort, even some of the bad ones do.
Which is why MAA should just be a background excuse for citizens to go on Expos.