My general consensus as with most on the show, its mid... And while I'm glad we DID get a Chubby Chaser anime, which seems at least in my exposure of reviews, to be the main boon people have given the show.
However, its not too interesting outside of that...
I had some Ideas That wile wont be used, I like to think would've been interesting to see:
1. Sateru, I think it would've been more interesting if instead of had the trope of feeding on desires; She was the dark lord of the fantasy world, and her plan was to go to the human world and try to seduce adventurers into the laid-back lifestyles of Earth so they fail the magic portals check, and she could rule the fantasy world largely unopposed.
2. A Trio rival group consists of a Slime, a Dwarf, and Harpy, All of which formed a bond ship/group of monsters that have chosen to abandon the fantasy world to be permanent residents of the laid-back/continent lifestyle of the Human realm. They try to coax the other girls to join them, and in their debut would make strides in having Elfuda join them... But they typically fail as their lifestyle brings to light problems that deter others from joining; The Dwarf has become reliant on her machines for the most basic of functions, the Harpy is at a point where she can no longer fly, and the Slime is so big, she has tremendous trouble getting into or out of most places.
3. Kuroeda, I think a drive for her character that would be interesting would be she wants to lose weight so she isn't taxed for it. As Japan has a fat tax. I think it be an interesting layer to hoer character.
4. The idea of having an Anorexic monster girl who is unable to return to their home, not due to them being overweight, but underweight. She'd probably show distain from advice or general suggestions from most of the girls thinking that them being overweight have no right to lecture her. So a prideful sort of monster would fit her.
Those are some general ideas I had.
Would they have made the show/manga more interesting? Would it have made the SHOW more interesting?
I don't know, and never will...