The new Kozilek looks amazing, because he is another card which can be put in of Show and Tell and has an immediate effect. He promotes to playing the full 4 SnT, which makes the deck stronger in general (increased chance for Titan+SnT).
I think Rock Lee's UG shell is the strongest version of the deck. Ugw seems to greedy in regard to its mana base. More importantly it is also a misconception to add specialized anti creature cards to a deck, which is supposed to be strong against fair decks in the first place. UG is supposed to handle fair matchups without a third color and struggle against nonfair decks g1. The meta argument is valid, but I think that we can fine tune the UG build for a general meta. The deck looks well build except ~6 slots we have to toy with.

@Mech: Stifle/Trickbind + Crop should be enough to handle "normal" Wasteland scenarios. Both are stronger than Needle in general, but Needle shines against a) Plainswalker b) Wasteland recursion. I consider a build with 3 Stifle / Trickbind, 3 Crop and 1 Needle + 2 Trinket Mages to fetch it. Having like 7 anti Wasteland cards looks like a good number.