I voted for other specifically because i feel strongly about all of these, and some usually impact the other. As in, a game with an incredible story usually increases the length of the game, and sometimes (but not always) has player impact.
With RPGMaker games, I've gotten used to black screens / no art during scenes, which is perfectly fine. This is due to most of those games have a good story/writing to go along with it, to make up for it.
Length could be good or bad. IF a game is big and has a LOT of content then i would argue that its fine. The Passage for example, its a massive and long game with a TON of content. But making a game for the sake of making it longer isnt fine. Little content with tons of backstory/talking usually isnt as appealing. Which is the sole reason why i hate most VNs and mega long intro's.
In games, especially with RPGMaker, I mostly look for good writing/a good story, and player choices that make an impact. I dont usually prefer linear games as i like multi-ending games, but ill try anything

. For me personally, artwork is a plus, but is not required for me to enjoy the game. There is several games on here with no artwork that are absolute bangers. DOAS, BOTW, Servants Tale, Vampire Reformatory, Where Monsters Dwell, Kaelis Apprentice, the longer version of SQ2, just to name a few.
(I know a few of these have "sprites" of the spanking scenes or w/e but i dont really classify that as artwork)
One of my all time favorite games on this site is the SpankQuest series. This is due to the freedom thats within the game. You can spank or be spanked by several people, as much as you possibly want. (mostly referring to SQ2 here). The game series has good art, good writing, good amount of choices. The only thing it slightly lacks is length, but i know Bagool is currently working on SQ2 some more. <3, and it is somewhat linear.
Another favorite of mine is Welcome to Puttsdale, which is purely text based with no images. Fantastic writing and tons of choices, with some player impact.
Apologies for the long rant, i just enjoy talking about this stuff lol.