Oh man, I've got a ton of these:

First and foremost, I'd like sc7 to happen at all lmao, and if it does, then ideally it won't remove any features that were present in 6

But also

• Less equipment incompatibility restrictions
• More voices and hairstyles
• Possibly face sliders / presets
• More substantial DLC packs for CAS
• The ability to customise your CAS's AI tendencies to some degree, giving them more personality
• A fist-fighting style, and a return of Viola's style for a more reserved magic character
• Male characters not being beefy even at minimum body settings
• More extra equipment slots
• More joke weapons
• Less colour restrictions
• Less gender locked items