Thanks for reporting those.
The way the element mode operates in Modo is not really possible in Blender as far as I can tell, because the transform operations will always operate on the active and the selected components/objects. This might be somehow possible at some point however I did not really put too much thinking into. I definitely would like to implement that because it is really a cool way to work.
The Cursor alignment based Transform Orientation is a quite recent implementation. Blender 2.80 alphas first got Cursor rotation feature (2.7x and earlier did not have rotation, the cursor only had position) then they recently added that to the TOs. So that stuff was not part of the picture when I developed the add-on. I will try to add that to the next release.
Btw the “Custom” mode is broken again with recent Blender 2.80 updates. I will try to make a release soon with the FRs and the fixes.