Now that Hook’s behavior has been changed so that clicking on the menu bar icon opens the main hook window, a few concerns:
Clicking on the menu bar icon when the hook window is open should close it. I realize I can also close it by hitting the escape key, but it is more intuitive (at least to me) to close the window if I want to dismiss it by clicking a second a second time on the menu bar icon.
There no longer appears to be a way to use the menu bar icon to open the popup menu with preferences, etc - so now you need to open the main Hook window and use the gear icon. Option-clicking on the menu bar icon should open its drop-down menu, which would be consistent with how MacOS overall handles menu bar icons with added functionality.
I put this in bug reports, although I’m not sure it doesn’t better belong in feature requests.