The resources are already as scarce as they are with so many players tighten up in a small place and having to deal with despawned resources because of corrupted invasion is purely crazy considering that the Portals/Monoliths/Hives/etc respawn really fast making gather to be almost impossible in some areas.
I have tried with a few friends to keep the corruption down but we failed miserably because the portals resppawned one after another… endlessly.