For the outliner repetitive elements, @Pablo Vazquez (venomgfx) and I came up with this design:

Another option as presented by @Brecht Van Lommel (brecht) is to have a "Playblast Engine" where we set these up.
The nice thing is we can use "RENDERED" in the viewport to see how it will look like.

@Hjalti Hjálmarsson (hjalti) I eeven tried that in your computer and failed to reproduce there.

1. I find strange that some modifiers work in edit mode but not all of them.

For example, Instance doesn't, but Hue/Saturation/Value does.

I can't reproduce here (in a build without AVI). Which file did you use as example? Can you try changing your output folder to /tmp/? Does it happen if your video format is .jpg images?

It think Joshua's comments are valid, but also we can leave some nitpicking to be done in the original branch (greasepencil-object), not necessarily on this patch.

Joshua, the filters are influencing the displayed keyframes yet you can't change them from the UI.

This file doesn't even open anymore (Missing DNA block). I will close it for now.

This is fixed already.

I talked with @Campbell Barton (campbellbarton) about that. Although some tools need their manipulators to work, we may have a viewport where we are only viewing the data, so it's fair to expect things to be hidden there. Tagging as low priority though.

@Antonio Vazquez (antoniov) I looked at the splitting task (even have a wip branch) and I think you are overrating its complexity. I can lend you a hand if you want, do parts you may find hard, you name it. But really, it is mostly monkey work for 90% of it.
It is a mix of copying files and stripping the unneeded parts, reverting the changes in files that are modifier specific, and duplicating code for utils (move up, down, copy, new, del).

My 2 cents on all this:

Most prominent issue fixed by Brecht. (great work)

@Campbell Barton (campbellbarton) I thought we had removed the need for notifiers/subscriber for the time being (until the end of the Code Quest). Anyways, it seems we still have bugs around that.

I can't reproduce here. I need a sample file, and ideally a screenshot showing where you are changing the orientation.

Easier way to reproduce:

@Brecht Van Lommel (brecht) can I interest on into profiling this?

• Final fix

• Fix alignments

It is low priority though since Spring team can just manually unlink the objects and save/reload the file.

@Brecht Van Lommel (brecht) I think the object should be added to the blender file but not linked to scene collection.