Back in 2015, I floated a Sega Brawler in the vein of Power Stone/SSB/PFAS in a series of top 10s, on Gamefaqs.
Basically, I picked 20 characters, 10 items (weapons or whatever) and 10 locations from Sega Canon (EXCLUDING the Sonic franchise, as there would obviously be representation from that series and the selections would all be #1 anyways), to be included in said game.
It boiled down to:
Locations:
10. Kazarne: Super Fantasy Zone
9. Kogane-Cho- JSR Series
8. Turtle Village- Golden Axe
7. Paperock- Alex Kidd in the Enchanted Castle
6. Kamurocho- Yakuza Series
5. Village of Zoah- PDS
4. The City- SoR Series
3. Splash Garden- NiGHTS Into Dreams...
2. Yokosuka Harbour
1. The Comic Book- Comix Zone
https://gamefaqs.gamespot.com/top10/2728-the-top-10-sega-locations-that-could-be-in-a-mascot-brawler
Items:
10. Zombies- House of the Dead Series
9. Key (sword)- Clockwork Knight Series
8. Golden Gun- Sega Golden Gun
7. Motorcycle- Hang On Series
6. Spirit Balls- Altered Beast
5. Pipe- SoR Series
4. Spray Cans- JSR Series
3. Shurikens- Shinobi Series
2. 16T Bomb- Fantasy Zone Series
1. Golden Axe- Golden Axe Series
https://gamefaqs.gamespot.com/top10/2726-the-top-10-sega-items-that-could-be-in-a-mascot-brawler
Characters:
20. Combo- JSR Series
19. Alys Brangwin- Phantasy Star IV
18. Larcen Tyler- Eternal Champions Series
17. Bruno Delinger- Dynamite Deka Series
16. Bahn- Fighting Vipers Series
15. Alex Kidd- Alex Kidd Series
14. Dan Marshall- Binary Domain
13. Ren- Yes, that Ren
12. Kage- VF Series
11. Saejima- Yakuza Series
10. Astal- Astal
9. Vyse- Skies of Arcadia Series
8. Ax Battler- Golden Axe Series
7. Ulala- Space Channel 5 Series
6. Axel- SoR Series
5. Edge- PDS
4. Joe Musashi- Shinobi Series
3. Kiryu- Yakuza Series
2. Ryo- Yes, that Ryo
1. Akira- VF Series (which makes too much sense)
https://gamefaqs.gamespot.com/top10/2722-the-top-10-sega-characters-that-could-be-in-a-mascot-brawler
https://gamefaqs.gamespot.com/top10/2732-the-top-10-sega-characters-that-could-be-in-a-mascot-brawler
My lists may not be absolute perfection, but it's a good starting point!