That 90s outfit was stupid in comics, but I didn't mind drawin it. By the way the costumes on some characters are gonna be based on what I like, that's why Storm's in her Punk attire. I been forgetting to thank that H-Knight for suggesting Alicia Masters, I kinda forgot about her so thanks bud. Also I did recolored and reshaded some of these.
1. 1990's Sue Storm outfit ~ Agreed about the (1990's) Sue Storm outfit, the gods awful attempt to have Sue Storm go from Super-Mom (to both her son Franklin and to the FF-team) to semi-dominatrix 'MILF' after her (psychological) fusion with her evil (full dominatrix) Malice split-personality.
2. FF Members? ~ Assuming you are reprising 'Thematic Consistency' with this gallery, as you did with your Diamondback (Rachel Leighton) gallery, I do not recall Namorita (Namorita "Nita" Prentiss) or 1980's "Punk"-theme Storm (Ororo Munroe) being members of the FF-team? Though Namortia does have strong ties to the Fantastic Four (obviously), so that angle is far less of an issue.
3. (later) Additions ~ Definitely a good call to include Sharon Ventura (Ms. Marvel II, She-Thing) and Jennifer Walters (She-Hulk). It will be interesting to see if you do both versions of Ventura (human-mode and rock-mode). I would probably stick to doing Walters "Sensational" She-Hulk version (when Walters was an FF-member), rather than her current rage-a-holic "Savage" Hulk version with the current 2020's Avengers team.
4. Suggestions ~ Some friendly suggestions, in-keeping with Thematic Consistency? Alicia Masters and the Inhumans' Queen Medusa.