Just wanted to mention this one again. It's not the end of the world, but for some more complicated NPCs the Effect Features take up a
lot of space (and the Version section is brutal, too (I know that's not this extension but it exacerbates the issue)):
Attachment 63182
A possible solution might be to have a button (or just click on Effect Feature) to expand/minimize the section. This would keep it out of the body of the statblock but make it less obtrusive when needed. Sections of the Actions tab on PC sheets work similarly to this idea, though I'm not sure if it's possible to leverage that directly here.
Thanks for all you do. These extensions are indispensable.