@Dastern sadly we live in a world where payment processors can put a lot of pressure on companies to have them censor or not release content they deem problematic, so even with enough demand a series like Redo of the healer might be considered not worth the risk.
Personally I started reading the manga out of curiosity, I don't know how much different is from the anime or the LN but I didn't find it unbearable, partially due to my tolerance to objectionable content being much higher when it's done to horrible people. I'd read the LN if it ever gets licensed here, but I don't think it's going to happen.

MAL You can track down author, illustrator links from there.
GA Bunko Volume 1 There doesn't appear to be a dedicated series page.

So far the only long form series of LNs I've attempted was Index. I tried binge reading all of OT and while I didn't really notice a dip in its quality, I felt myself getting burnt out by volume 16. I haven't really picked it back up since. That's more on me than it is with the work.

Like most things, there will be high points and low points for such series, but as long as a positive average is maintained, I'm down.

The next longest series I'm familiar with would be Realist Hero. The first 4 volumes are great because there was a narrative that was meant to be told all throughout. When that arc ended, volume 5 felt like it was tacked on. Fortunately, it picks back up afterward and has been pretty good again.

Where was I going with this? I forget.

tl;dr I can accept dips in quality now and then as long as overall it's good.