I wouldn't say that.. there is so much more to explore...
I'm playing around with box86 on the GO3. Means running i386 native Linux applications on the GO3.
For example: https://www.gog.com/game/steamworld_dig runs mighty fine on the GO3 which is amazing, and starts within a second or two.
https://www.gog.com/game/freedom_planet also works fine, but takes a bit to actually start.
There are also a lot of native Linux applications for armhf/arm64 that work nicely on the GO3, but it's a bit of work involved on getting these running.
Also Streaming from a PC directly to the GO3 is also a thing:
(not only just video, but you can also play that way on your GO3)
So overall, there is always more to do with the GO3