Well well well, you could have used original elevator.

Good!

i couldn't help myself this time, even though i suppose it no longer matters.
1. the ceiling wasn't black in the second room. please don't hound me about details and then make a mistake in your own suggestions.
2. if i had simply put a piston there when you had suggested this, i.e. before i had the autoportal in there, it would be pointless, as anyone with a dual portal gun could have easily defeated the level without climibing onto the platform. the point of the button was to get you to climb up on the platform in order to gain access to the next room, just like you had to in the original.

Just get rid of the emancipation grill on the top, make the ceiling in the second room black, put a piston platform where the block and button are (make it immobile too) and that's it.

What, no hammer?

Quick note. If you're trying to keep us from glitching our way through, the portal bump works past the emancipation grill as well.