Key differences is UI organization, exposure and iconography compared to Blender, at it’s core the feature set is exactly the same as Blender, just the way you do things with the GUI is different, cleaner, improved, less redundant, and all round more thought out. It also has improved tooltips, larger offline documentation, and general nuances that improve every day tasks.
Wow. That’s A LOT of work. Lots to like, too, like the colored icons to name but one.
Something to keep in mind. If I wasn’t using ecycles, I would have a look. May anyhow…