Made my way through learning to write 75% of the Joyo Kanji via Rembering the Kanji and Kohii. Love the way this satisfies the number-go-up instinct in my brain, even if going through doing isolated kanji study isn't the most valuable thing.

I've also just generally been kinda absorbed in Anki this weekend. Had a few days where I couldn't really watch/listen to anything, but I could kill time on my phone w/ flashcards. Caught up on my Core 2k/6k deck (I'm about 1100 cards deep into that).
Also messed around with importing media decks from Jiten and messing with those. It's like a buffet tho, where my interest is higher than my capacity. Looked at these decks, but ultimately realize I should be focusing more on my core deck if anything, to get all these common words out of the way. The media decks are more compelling when they can be less than 1000 cards for high coverage, but for a season of anime or something, I'm still looking at about 2k card decks for 95% coverage.
How does MaruMori handle kanji?
I think RTK has definitely been good for me. I was doing Genki stuff and common words in Anki for a while before I tried it. Building up kanji knowledge the RTK way helps with not getting similar characters confused near as often, and not having to copy every time I write one.
You can get a lot of milage out of just reading the first bits about the method if you don't want to go all in on flashcards.
But getting that strong familiarity with kanji makes it easier to learn new words and such, so earlier is probably better if you want to do it.