LOL! I thought I posted on here, must of just hit enter and forgot to click post button.
Anyway, I think the cage looks great! Very large, I'm curious on dimensions. Also I believe the left side door is large enough to permit access to entire cage, so don't really think you need a right side door, but I'd keep the frame in any way, looks supportive and gives another climbing surface for the gliders. I also love the little door in the big door.
Congrats on getting your gliders today, you must be so excited! I can't wait till you post the photos of them and their cage all set up.
Ok, I'm hitting the "post" button now.