Besides the global capture for the desktop app (which I agree, should return you to the window you were at when you make your entry as described by PeterFG), I would like to see a web clipper and a quick entry method for phones (especially Android!).
There is a Moo.do web clipper but it has never worked. I am asked to sign in but only via Google, which is not how I log into Legend/Moo.do. Then I get a dialogue box asking me to choose a document, but none of my documents are listed and there is no way to enter anything (probably because I am not logged into my account!). Dynalist has a couple of good web clippers that could be models for what Legend could use.
For phones, it would be great if I could select some text (or a webpage) and click “Share” and have an option to add it to Legend (just like you can share it with a text or an email app). This could just add it to a designated document instead of having a full entry module like the desktop app has. I would just like some way to get stuff from my phone into Legend so I can process it without having to cut/switch apps/paste/go back to other app.