"Invasion" mission/event

What if, there were special missions that required like 30 (maybe more/less) helldivers, as an example, what if when we make it to cyberstan a countdown until a "Super invasion" starts and when it ends there will be an like, storm the beach mission where 30 or so helldivers would land outside a mega fortress and would need to take it down (or maybe special fabricators/enemies/objectives)

The same could happen when super earth gets invaded, as an example, a countdown until the enemy fleet arrives and than you would have 30 or so helldivers defending maybe a critical facility, or a Metropole city

And normal 4 player missions could act as some sort of spec ops like mission where you would sabotage maybe some of there defences on cyberstan or take out enemy scouts that landed early on super earth as an example

And I know that the game is balanced around 4 players and most likely not suited and balanced for missions above the 4 player limit, but just imagine the shere chaos such a invasion (and maybe fun) could be

Also this is my first post and I thought I could give it a try :D