I must have been some salesman to get my DW into a TC from a 32' fiver and a 37' TT. I eventually ended up having to buy a utility trailer in order to have a walk-in closet and 2nd bathroom.
Yeah. Those engineers who designed those things don't know anything about weights, enertia, or mechanics. How dare they engineer something like that.....you know, those slides we have all grown to love so much.
The real question you should be asking is "How do you like this one, honey."
If it does malfunction you might need a lot of helping hands to push it back in. If the slide needs to be removed for repair or appliance removal reasons then it will require special equipment that will be expensive and require many labor hours getting into the thousands. Full wall slides are very heavy and sometimes make the rv unbalanced. You would see that when you put it on a scale. Personally i dont think its a good idea to poke a hole in the side of any rv. I would only go that route on a seasonal site where i wasn't driving it over the road.
On the other side of the coin, they build them and people buy them. It will depend on luck and how it handles on the road.