I’ve been on Linux Mint for the past several months and I think I’ve needed the terminal twice?
Once I couldn’t find a GUI option to adjust the brightness/gamma, but searching found me the terminal command so I just used that.
More recently I needed newer Nvidia drivers than were available by default, so I had to add a new PPA thing. We’ll find out later today if I’m going to regret that.
Guild Wars2 is very good.
It downscales your level if you go back to older areas, so you can play with lower level friends. (Though it’s still pretty generous, and the high level friends will be more effective). So if your friends aren’t playing much, you can still coop with them when they do play.
There’s a lot of content. Most of the maps have stuff just happening. There’s also instanced content for 5, 10, or … I think private convergences can go up to 20?
There’s not really a gear grind. When you hit max level (which is pretty easy) good-enough gear is very easy to get. A smidge better than that is a little expensive but still very feasible. The fanciest gear is numerically the same, but let’s you reskin and swap stats for free, which is nice.