One thing to consider is that while high detail levels may be lovely and well suited for intense important scenes and (as shown earlier in this thread) illustrations, it is not exactly optimal for many long running series with high focus on story.
Sure, there are successful comics out there that have it. Gorgeous art and all, I know of a few and they're some of my favorite art of all time. But I never read the comics in question. And looking at the comments sections, it seems that the same goes for an unusual amount of other people getting involved with the comics in question.
Reason? The art gives so many impressions that words and story have no place to take. When some readers try to focus on the story, they get fatigued.
So this is not only a question of update rate, but also having a balance that works to engage the reader in the way that you want.
This is not a criticism against comics that choose to go for very detailed art btw, in some cases it's preferrable and that's a decision that is up to each artist to make. I just figured I would add another piece to this discussion since I think one thing keeping many people from a "simpler" artstyle and faster update rate is the idea they've been taught that more detail and more time poured into a thing automatically means better. Fact is, more time poured into something is only a positive thing when said time is used doing the thing that is right for the project in question.
Personally I believe in learning to work fast and well. Working fast is a skill, not because it's fast, but because creating an appealing image at a fast rate takes skill. What an "appealing image" is differs depending on who you ask. I aim to make art that is at a level that I myself would like to read, at a speed that will pay my bills and allow me to tell as many stories as possible. Finding the speed and style that is right for you is a matter of considering what you want with your project, how much time you can realistically spend on it and what kind of art you yourself would like to see. Try to find the middle ground that appeases each of these factors as well as you can.