Here is a portion of my list
- Playable RedXIII
- Playable Zack (Cloud Skin)
- Playable Sonon
- Controllable Party Members outside of combat
- New Weapons
- New Materia
- New Equipment
- Cloud 1st Class Soldier Outfit (Flashback)
- Cloud in his Corneo Audition Dresses (3 Dresses)
- Cloud without Gloves Outfit
- Tifa in her Corneo Audition Dresses (3 dresses)
- Tifa Cowgirl Outfit (Flashback)
- Aerith in her Corneo Audition Dresses (3 Dresses)
- Barret with/without sunglasses
- ATB fills only by itself over time (just like in the Original)
- Limit Breaks can be saved until used
- Hard Mode from Level 1 as a New Game and not NG+
- No HP/MP refills from Bench's or New Chapters
- Less Items (potions and ethers to use)
- No MP recovery over time
- Items useable on Hard Mode
- More XP from enemies (To make Hard Mode when beginning from Level 1 better balanced so you don't end up at Level 30 when facing Sephiroth, instead at around 40-50 ish. If not the double XP is already available)
I loved the Hard Mode more than Normal Mode even though my complaints were the things I mentioned above that can be fixed with Mods.
EDIT:
More Mods I would like to see.
- Better textures (for the ones that needs)
- Other graphical enhancements
- Reshade for more realistic look
- Reshade for more colorful look (FFVII Original Colors)
- Reshade for more grim look (FFVII Advent Children Colors)