Isn't this the way to build a slide?

I like the look both inside and out as I have camped beside a few, been in them, and seen them at shows. I dont see if their is any benefit however as that little bit of slope is not going to keep leaves or pine needles from laying on the top. Possibly they may have a definite disadvantage as you're not going to be able to put a topper on one. And a topper goes a long way as a first line of defense as far as water is concerned either extended or retracted, not to mention keeping debris off. You had better hope they did an exceptional job of installing all the seals which is a tall order for an RV manufacturer.