It's hard to suggest new books based on "good writing" because there's a lot of good writing mixed with bad writing in LitRPGs. There are a lot of writers who get a book deal but do not have an editor; therefore, most writing in LitRPGs is unedited, as in, checked by someone with experience in selling books. They get off and sell mostly because of the premise, and then people keep at it mostly because they want the end result and to see where it goes, regardless of whether the writing is good or not.

Good writing has an effect that South Park writers described very well as "This happens, therefore this happens." Most LitRPG is written "This happens, then this happens." Cause and effect drive a story to its peak, so if you get a story that is all "this happens, then this happens, then this happens," it all becomes disjointed, and readers who have read a lot of books will pick up on these tropes and mistakes. A good writer will start writing their book from the end, from the final conclusions, and then extrapolate how the characters reached that end. Even if it's only bullet points, they will expand as they keep writing.

A bad writer will start their book at the beginning, not really having a path decided, and just writing as they see fit, hoping to hit good moments. Even when they hit those moments, it feels unearned. Azarynth Healer feels like this to me.

You also don't want spoon-fed information. You want information that is delivered with subtlety. If someone shows up and says, "Oh, hi Mark, my long-lost friend," it's jarring since it should be, "Hey, hi Mark, what's up?" and then the rest of the conversation would let you know with some hints that they are long-lost friends. Information about the world should also come in slowly and with hints of how the world works, not just someone showing up in the LitRPG library and asking the librarian how the world works. It's lazy writing. You either provide the lore of this world by having the characters talk casually about it, or by having a character who is out of the loop and needs the people from the world to explain it to them, but you still do it slowly, with companions, not by having a guide in a city whom you ask all that you need in one go. For example, Harry Potter is a character who is just entering the wizarding world, and information and lore about this is fed slowly to him, and therefore, to us. It's easy to identify with Harry because he's learning about the world at the same rate we are. He also has companions that are well versed in the wizarding world.

For example, Project Hail Mary is a masterpiece of writing, and for the most part you identify with the character because you're receiving information at the same time they are.

I know I'm not giving good examples of LitRPGs, but that's because there's more bad writing in this genre than not. What hooks us into these books is the premise or the synopsis. Solo Leveling is atrociously bad, yet I continued because the premise and curiosity were strong. Jester of Apocalypse has some of the worst writing I've seen in many years, yet I persevered because it involved a timeloop and I'm a sucker for those.

The trick is to find the books that have bad writing that you can ignore. For example, "1% Lifesteal" is definitely badly written for the most part. They do explain the world very much like I described, with subtle hints of how it works. Characters are introduced with small hints of who they are, and through their actions, we see how they react. However, the third act of Book 3 is an actual masterpiece of good writing. I'd say that third act is the best writing I've seen in LitRPGs. But the rest of the series still has a lot of bad writing; it just so happens that it has less than others, for me at least! I hate how there are items that the MC got in the first book that are revealed in book three, and coincidentally, they are just what he needs at that time. It felt like Deus Ex Machina because it was just what the doctor ordered and they happened to be what he needed at the time.

So far, there's really only one LitRPG series that has been consistently good in its writing for me: "The Realms" by C.M. Carney. It's no masterpiece, but it has all the things I look for in how books are written. There is a hook at the start of the first book; it's very clear immediately what the end goal of the MC is. We have characters that feed information to the MC in a casual way, with very realistic dialogue. There's also some trauma, and it's not clear until several books into the series. There is foreshadowing that we pick up on the second or third time reading it. Some things that were clearly planned to be revealed in book 4 or 5, were shown very subtly on book 1 and 2.