Here's hoping it's in preparation for a 2nd season! The world needs more animated Kessoku Band!

Honestly anything with a non LTS release schedule will be fine. So long as you keep a relatively recent kernel and GPU drivers it pretty much doesn't matter. You can go for a rolling release like Arch or OpenSUSE Tumbleweed or a staged release like Fedora. Even Ubuntu or it's derivatives are fine so long as you stick to the yearly versions and don't have a particularly bleeding-edge hardware.
My only advice is stick to the popular stuff. This applies to both distros and desktop environments. Much easier to troubleshoot things and find help and they have more people using them, which usually means the experience is more polished and bugs get fixed faster.

I always respec Shadowheart into anything but Trickery domain, usually Light or Life. I also generally respec all companions just to fix their ability scores, some of them are terrible by default.

FYI the episode discussions on anime@lemmy.ml are automated by a bot (the same used on Reddit in fact) and us Kbin users can't see bot posts, so it looks like there are none. I have high hopes that the next big Kbin update remedies this issue.

Cleric has a domain for basically everything in it, you can run a whole party of them and not suffer from the lack of any role.

I used it a whole 2 times in my entire playthrough. Once to get a certain book from it's trapped pressure plate by throwing it, another to help a certain dwarf from his predicament. The biggest thing that stops me from experimenting more with it is it's limitation to once per short rest and only being present for 10 turns. I get that it's for combat balancing purposes but it does make me just never bother summoning it. Wish they removed that limitation, gave it more utility uses and just completely disabled it's combat abilities instead.

Karlach is a simple gal, Duergar are bad slavers, Nere is bad Absolutist and also a slaver. Why side with either when you can chop both into pieces and kill two slaver birds with one greataxe!

If you don't care about the lives of the slaves trapped in with him then sure, you can consider it a win.

Using the open source driver with Nvidia is a bad idea, your card is locked at the minimum clock speed and it's general quality is not comparable to the proprietary driver (this is purely because of Nvidia's hostility to open source, not due to any inabilities of the developers of Nouvea.)
I'm gonna assume you are using the default desktop environment of Mint which is Cinnamon. Have you tried booting a different DE, or even better, a different distribution with something like Gnome or KDE to see if the issue persists?

I don't know why our poor shorty races are so under-represented, Larian did a fantastic job on their models! Compared to male elves and tieflings, the dwarf and gnome selection is vastly superior. And gnome racials are absolutely crazy, who wouldn't want advantage on all the most debilitating saves!?

Watch the video and then decide if you are still excited about it. The one video when they announced the power supply test lab is one of the many ones called out for misinformation in this very video. With their standard of information being what is it, no data they provide should be used for any serious purchase decisions.

LTT has been an entertainment channel with a drop of info for a while now, their content is pretty much only suitable as background filler while eating food. Their thumbnails and titles are also unusable without extensions to decipher them (shoutout to DeArrow from Ajay Ramachandran). For the actual good tech info you to go Hardware Unboxed or the very creator of this video.