Just don't blob.
Blobbing to some degree is almost required for team games because the chances you will encounter a blob is very high. So sending 1 unit here, and 1 unit there will ensure you lose every engagement.
Now there's a difference between a regular blob (2-4 squads) and a mega blob (5+ squads). Mega blobbing can be very effective with units that are decent at both AT and AI (Like Sturmpio blobs w/ shreks) but if you encounter some kind of wipe unit like a short range Katy barrage you can lose almost 2000 MP and 600 Munis in one swipe.
In the current state of the game, I'd say that blobbing outside of 1v1 is almost unavoidable. But mega blobbing is extremely risky.
2 days ago on Steppes I saw a Wehr player that had only Pgrens and Grens in one of the biggest blobs I've ever seen. It had to have been 10 squads. He actually did very well with it until the whole thing got killed while retreating by Katys and Centaurs.