Old Linux Method
So recently, the Nintendo Switch was able to run the Unbuntu Linux OS through hacking. This could be a pretty cool opportunity to give PSO a Linux Compatible Version / Installer! Someone could possibly say "Use Wine to launch PSO", well from what I've seen, PSO doesn't really cooperate well with Wine. In the Linux OS, it is possible to use an On-Screen keyboard which is useful, and it is also possible to use your own keyboard and mouse to use the OS. Im not sure if the Joycons can control your Character in PSO since i haven't tested anything yet, but if it couldn't, i'm pretty sure you can use other controllers and such! Theres many things you can also do with this OS, such as search the web, listen to audio files and watch videos! Its even possible to run the Dolphin Emulator (Gamecube/Wii Emulator) with this os!
UPDATE 5/20/19: The Nintendo Switch has a ARM Cpu, which is a Phone Cpu. Windows 10 has a specific 32bit version where it supports ARM Cpus. This is amazing news! As it now allows us to forget about Linux, and instead makes us focus on Windows, which is a much simpler OS to use! There is a video of a person loading up the Windows 10 Installation, however he doesn't show any further progress of what he does with Windows 10. The publisher that made it possible for Windows 10's Installation Process to show on the Switch has yet to make it public. If anything new every shows up with this new Windows 10 OS, I will update this thread ASAP! Thank you @Mugiwara for finding this amazing information!
Here is a video of the person loading up Windows 10 on his Switch:
I'm hoping to see a lot of support for PSO on the Switch! It would be awesome to play PSO BB on the go! And speculating how PSO is a somewhat light game, i'm pretty sure the Switch can handle it just fine! I don't want this opportunity to slip by without anyone noticing since this is great! I would even go as far as to make a tutorial on how to install the Windows 10 and Installing PSO if it were possible! Please feel free to let me know what you guys think!