Make the moving piston block like an normal block so you can stand on it and place things (like item frames) on it.

How is this useful or would make any sense? The item frame behavior for example would need this change on the server side anyway for it to not pop off, which would only be possible in Tweakeroo when playing in single player.

Something like that https://youtu.be/r4aZ3cjyjCY

I could smell FitMC before clicking the link, and I think interacting with moving pistons should probably remain as a hack.