Well, it's clear Sega has a lot of famous franchises, and since this game has seen some of them in the form of collabs, how about adding more for this game or for NG? Way too many current franchises can be transformed into outfits or mags, and much of the music can also be brought in to use in player rooms. So here are a few of the ones I remember and what they could be used. Not gonna mention posters on each item because all collabs should have a poster so people can see what they were about in their original art.
Virtua Racing After Burner Out Run For these three, and other vehicle games, could get the playable vehicles and make them into mag skins. These also have some memorable music that can be looped (minus V Racing).
Golden Axe Outfits, music and weapon camos.
Virtual On Outfits, CAST PARTS!!! and music. Maybe mags too.
Virtua Cop Weapon camos.
Periscope One of Sega's first games. Maybe make a mini submarine as a mag. No idea if that game had music, though.
Xaxxon Ships as mags.
Fantasy Zone We already have Opa Opa, but we could use some posters too.
Anyway. This is more of an idea thread than an actual request. So if anyone wants to add more Sega franchise stuff here, please feel free to do so. I may think of other games later when I'm not as tired.