@BazaarOfBaghdad I can tell you (having done it for giggles last summer) that Channel with Emrakul and Oath would be absolutely mad. If it were unrestricted, it would go right back on the list... but it would be super fun!
As for Will... I actually question how broken that would be, since extra copies don't really do that much, and drawing it early doesn't do that much either. It would probably be too good just because you could design a deck that could profit so much from consistently drawing it. I suppose that it's probably beyond the threshold of safe to unrestrict, but I don't think it's even close to as degenerate as many of the others on the list... Even Windfall is probably more dangerous at this point than Will. Because Will just isn't really a turn 1 card, and there are more consistently good turn 2, 3, 4 sorceries than Yawg, like Dig and Cruise.