Cool. I like the Power-Up one. Also, I had the same general idea with the Jump one. Edit: I guess great minds think a like, but yours works faster.
I've updated a couple of my SMB ones. I think two of them are ready to leave beta and one only needs some sprite work. I think 1-1 is going to have to stay as is since there's no way I can figure to fix it's couple of minor flaws without anymore commands or sprites. I've completed my Chicken Attack proof-of-concept, but haven't used any official ALttP sprites yet. I gave up on my ROB one even though it was nearly complete because I didn't have time to finish the arms for the contest.
Edit: SMB 1-2b and Chicken Attack! poc are in my crate now. Phred, other people have turned green, but you still have a ?-mark. I've triple checked your code.
Edit 2: BTW, SMB 1-1 through 2-1 are essentially complete if you want one of them.