I would like to see Gambler's paradise as well but as with other stages with moving obstacles, its likely some would complain about them for the unpredictability.
DOATEC HK would also be interesting.
Island fro DOAU would be a bit more interesting then Zack Island from 5.
And I know White Storm for DOAD has the snowman from Koku An so I would like that back as well.
We already saw a return of Sweat from DOA5 in the Lisa trailer so that is unnecessary.