Since we're discussing offense in here, can we talk about using U+4? The fact that that move is found to be +4 on block makes me love it even more than I did, and also explains why NRS decided to make it so slow. I already use it in my gameplan, but now I want to use it even more. It may always gets blocked, but who cares?... maybe now, Ermac WANTS you to block it!...
U+4 leaves you directly next to your opponent, so now you're standing there with big advantage. This should mean your options could look like this...
1. THROW
Throw essentially becomes 6 frames now. I honestly think that throw may be the best option after a blocked U+4 now. I'd even say to throw every time after a blocked U+4 to condition your opponent, until they either start breaking it, or get out of it another way.
2. 3,1
3 is 12 frames, so +4 means its essentially now coming out in 8. We all know and love the 3,1,2 string, so it could be a good way to continue pressure.
3. D+1 or 1 [need to test]
This would be the go-to option for an opponent who would try to jump away after blocking U+4, figuring they'd crossup JIP your grab attempt. D+1 would essentially be 2 frames and I believe you should be able to hit D+1~TKS for a juggle. The only problem is that D+1 is -13 on block. If a standing 1 would also knock someone out of the air, I think it would be the better option since its even on block. I'll need to test this.