Hey there! I just wanted to ask if its necessary to work with ASCII Graphics and Turn-based mechanics, or if a more loose rogue-lite etc. approach is welcome too. Thanks!
ASCII graphics are not required at all. Turn-based mechanics are preferred to keep up with the traditional roguelike gameplay, but are not required either.
There are many interpretations of what a roguelike is which may serve as a guide. However, 7DRLs may bend or even break these interpretations in the name of Innovation.