What engine will you develop this on? I think this will give us better understanding of limitation. For instance, combat on renpy is.... probably wasting time. RPG Maker also has limitations and the gameplay loop is very common by now. I think it is still one of better engines, take look at Sierra and Nomo's LoL game for inspiration. I also like exploration. Maybe potential for other characters.... Asami and Opal 
Maybe even Jinora
Outfits.
Maid is simple and standard.
Slingshot bikini zzzzzzzz. Boring and over use imo. It can potential look good I think because not many character is tone like Korra.
I think Korra look really nice in tv so I would prefer if we have alteration of her different tv costumes. Something lore fitting is nice. If you have progress in corruption you can have her unlock inhibition and exhibition clothes.
[spoiler=swim]
I like idea of Korra making cloth wet with waterbending.[/spoiler]
I think Korra regular would be nice if adapting. So you can take of piece by piece.
[spoiler=more idea]
original clothes
or make tight maybe nipple protrude
Maybe shirt can cut lower to show some more skin first and more skin later when she get familiar
I think training and athletic very good look. She has very nice muscle body
Sarashi look good and can come loose in fight.
korra sleepwear
formal
slave and defeat korra should look good. I like the chains
Maybe slave should have rags. With holes so not too much is cover.
If you have sport scene or game, maybe to make Korra earn money. Have her sport gear
Make it sexy to bring in more viewership to make more money.[/spoiler]
I think Korra hair look good. I like short hair best.
Korra with long hair none tie is nice too I think for slave or defeat look.
Bonus Asami need some love for dirty girl
Maybe I can volunteer for scene ideas.
