A little while ago I put together a quick-reference thread to this end:
I do agree that a command-line tool is not ideal. There is the argument that Panda is a somewhat command-line oriented engine (see the build system), but I do think that it’s not great for first-time users.
I can at least answer that glTF supports skeletal animation, indeed, from what I’ve seen of it.
Overall, there has been a bit of discussion around these matters of late, I believe. My feeling is that we’re in a bit of a transitional period: YABEE, once the standard tool, and a pretty mature and stable one, has fallen away with changes in Blender. GLTF support has entered–but yet has a few issues.