Hello,
Glad you like FlowCanvas and thanks very much for the well presented suggestions! 🙂
I’ve fixed both the bugs now and I will take a look at how possible is to implement your suggestions. I really like some of them.
Unfortunately #5 is really not possible though, since the menu used there in the image is the native unity menu and simply can’t support a search field. That is why I’ve created the other menu that can be opened with the Space key.

As for the rest, I will take a look at them for sure 🙂

Thanks again!