Definitely a solid investment imo. I’ve played about 1/3 of the games you listed and loved them on the Deck. I typically don’t care for buy brand new games, not only because of them being incomplete or a buggy mess most of the time, but also because I genuinely can’t justify spending so much on a game I might not care for or barely put time into. The good ones (like Elden Ring) are an exception.
Either way, enjoy your Deck and the ability to play virtually anything you want aside from some brand new AAA games that might not matter to you anyway or be better optimized in the future 😁
Yes, before I got the OLED I played docked most of the time. Now that I have an OLED I prefer to play handheld only because of how beautiful the screen is but I still duck it sometimes. With the slight performance boost and the recent update I think it’s even better now