I'm not a huge fan of iDM or 2v2v2v2 iTDM, but I would definitely play 4v4 iTDM. I say we add it to the pug bot and see how it goes. It certainly couldn't hurt anything.
4v4 iTDM is actually better then 2v2v2v2 its more fun also, it would be a worthy addition. Just add it for 2 weeks and evaluate if its material to keep.