Personally, i’d like to have a judo and Aikido as fighting styles in DOA6.
Free Step Dodge
Onryoki
Bacaww
Depends on if its a male or female but at some point I'd like to see a brawler type of fighting style or an even more annoying version of Marie 
Mama
More Ninjutsu (jk lol). But an Aikido fighting style would be nice (not counting Momiji). I usually main those types of characters anyway.
Lulu
I'd like to see some Israelian Krav Maga...
Mostly because I don't even know what it looks like...
Mostly because I don't even know what it looks like...
Onryoki
It’s like Bayman’s style.
Project Bokuho
Judo and Aikido are loooong overdue. Those styles are a must!
Project Bokuho
She doesn't count. We mean REAL Aikido users l0l