Just starting to use 2.0 on Win10.
I would highly recommend changing the label for "Save as..." to "Save scene..." because the conventional meaning of "Save as..." is to save a current document under a new name and then (usually) continue editing under that new name. This caused confusion when I saved and the File Dialog defaulted to the name I had Exported the (entire) document to previously. I was afraid to save under a new name, since it wasn't immediately obvious that ONLY the scene was being saved.
This is just a small thing, but avoiding these little confusions goes a long way to making a new tool more familiar and easier to learn.
On that note, I'm glad you're not calling a "chunk" (scene or whatever) a "document" the way Scrivener does. Surprisingly, it took me a long time to get used to "Document" not meaning the whole book / play / project that I currently have open. Nomenclature is sooooo important . . . .