PS5 runs an x64 AMD CPU and GPU, meaning it really shouldn’t take much to emulate. Modern game systems are just customized desktop PCs, unlike systems like the PS3 which had very specialized hardware that’s notoriously difficult to emulate

As long as the “ROM” isn’t actually an executable file (such as a .exe), you should be safe. Some shady websites will tell you that you’re downloading a ROM, but are really downloading a malware installer, so you have to watch out. But as long as you’re downloading an actual ROM file (the type of file is different for each console, but Google says that most PS2 ROMs should be a .ISO file), you’re probably fine.

Disclaimer: there is always a risk when pirating files. Make sure you use an ad blocker and don’t accidentally click on any fake download links.

To be fair, I’m guessing the majority of Pi’s are used headless anyway. Plus even the older Optiplexes have DVI, which is just HDMI without the audio or fancy stuff like ARC. Won’t be getting 4K or anything, but still a very good video output and IMO adequate for almost all use cases.

That’s only if you want to watch it outside your home network, and either way I would recommend not just opening a port to the world like that. I’d say to use Tailscale (which is trivially easy to install) for remote viewing.

Personally, I used TrueNAS Core (known as simply FreeNAS at the time) for my very first NAS setup knowing nothing about BSD-based systems, and it’s been pretty much fine. It has ZFS which is absolutely desirable for a NAS that you store important things on, and It has some quirks but Ive been able to accomplish everything I’ve wanted to with it just by looking up the miriad of guides available. Not saying it’s better than the alternatives, just sharing my personal experience.

However, if you’ve already got OMV setup and it’s working for you so far, I would stick with it. I believe you could always import your drives into another NAS system if you decide to move later, so why fix what isn’t broken?

If you’re actually ripping bluerays, I would highly recommend using MakeMKV. It’s technically paid software but while it’s in beta you can can a free license key from their forums. BluRays can be formatted oddly and include a bunch of crap you probably don’t want (preroll ads, etc), so when I tried to rip one with jusy ffmpeg it was a pain, but MakeMKV deals with most of that for you and gets a 1-to-1 copy of the movie files + anything like captions and alternate audip tracks.

You aren’t beholden to any other countries laws, but such domains are the property of their respective countries and their usaging can be conditional and revoked at any time (see what happened recently with .ml domains). Personally I use a .xyz domain because it’s also very cheap, although I’ve heard that it can make you appear more “suspicious” to antivirus companies and such.