It would be very helpful if you could add a way for players to hide art on specific cards. That way, players could set a card to "text only" or choose to not view specific art, and be able to avoid things that they find unsettling, gross, or have a phobia of.

This has come up for me more than you might think! I have had to not play specific decks against friends, because there is art that bothers them. Friends have had to not play certain decks against me, because there is art that bothers me. There have been times I have avoided playing for a stretch because a set I have a particular issue with is prominent, and it would stop art-based concessions in random matches (such as, in my case, when someone plays Arasta while I am taking a lunch break).

Related: I've also wished before that I could toggle off stages that I don't like. Or to filter out certain creatures when browsing cards (I have a hard time building green decks, because at some point you are scrolling through lots of spiders. A friend of mine has the same issue with black decks and zombies.)