Valid point on 2 sets per day not being a permanent thing, though it's still taking up over half the daily oil (and for those of us who work full-time, we aren't even getting the full potential oil). I can often do all 6 invasions before needing repairs, but depending on how much PoC/grinding I've been doing, sometimes I lack the oil for it all.

I usually cut off 1-3 currency/blueprint invasions if I'm feeling short on oil, but the rest (Cores, Candy and Metal) are stuff I need enough to do them anyways