That’s a good question on pacing. If we look at Western media made for streaming platforms, it often varies in length episode to episode. My wife and I recently were watching The Crown and some episodes are a pretty standard ~45 minutes, while some are over an hour long. I think there is a difference in this kind of thing when it comes to animation as it takes a lot more work to just drop in a couple extra scenes.

I suspect that even if an animated show was created and aired for streaming only, that they would still stick pretty close to the traditional pacing/timing. I am guessing that is because that is what the production/animation teams are used to doing and it would also enable it to be aired on broadcast more easily at some point in the future if desired.