I love it! Since you can customize everything about it, it's perfect for my needs.
I have! Works great once installed...
It's a little difficult with the two options I selected: full expo bars and full grid pattern. But I was able to mount the tent securely with ratcheting wrenches.
Didn't get the basket, so no idea.
As for ladders, the Gamiviti towers have a lot of adjustment that you should be able to mount the rack foward enough to fit a ladder between the rack and hatch. I have mine pretty close to the hatch, but don't have a ladder to accommodate. If I bought a ladder later, I think I can still adjust the rack to accommodate one.