The PC community is famous for mods. Specifically, there is a "no-mosaic" patch and a "3D skin texture" mod that drastically improves realism. While the developers (Koei Tecmo) rarely ban for cosmetic mods, technically, it violates the ToS.
The DMM version is the original Japanese release and often receives updates and new characters earlier than other versions Steam Community Guide to the DMM Version of DOAXVV - Steam Community 6 Apr 2020 —