You can use Linux as a powerful base system. It has niceties not available in Windows, like virtual desktops, THE CONSOLE, software manager (installing software is dead easy), etc.
You'll still need Windows software (those VNs), so you have Wine or, as an alternative to VMWare, VirtualBox, which is easy to use and never gave me a problem. I don't know about the VNs that need Japanese locale and that's a problem, but with virtual machine you can do it. However I played Yume Miru Kusuri on a Linux Mint with Wine back in 2015 and it never gave a problem.
If you like Mint I'd suggest keeping with it. It's one of the best distros and the most popular.
Linux Mint supports Steam on its repositories, BUT not every game available for Windows is available for Linux. So I guess you'll be using your virtual machine a lot and why Linux then?
Linux gaming works better with GOG, because you can switch to a native Linux version of the game (I don't know though if they like more Red Hat-based or Debian-based).
Photoshop is a problem, I haven't tested it but I hear it's one of the last bulwarks of proprietary software still not available for Linux.