Red Hood - As others have said, lose the Mortal Kombat outfit, and go for something more familiar with the helmet and jacket. However, I think it might be cool if he had different “styles” for different environments - like a regular leather jacket in mild to cool climates, maybe a heavier one for cold weather, and perhaps a simpler “vest” look for warmer weather.
Catwoman - I actually like seeing her wear purple again, but she needs long hair if that’s the case... and I honestly think that it might be cool if her purple suit is explicitly her “showy” suit, so she has some jewelry with it, like the belt from BTAS or the bracelets from Long Halloween.
Tim Drake - New name, and a cowl.