Now plugins can be placed in the bookmarks bar!

This feature works in Dev builds starting from 4.0.220.1.
All you need is to write one key in the shortcut of the browser call "--show-extensions-on-top"

The news has been taken here (carefully * .bmp)
PS: so far, it seems, it doesn’t work in OSes other than Windows
zzy: And yet, in the same label, you can, after the keys, register any URL that will open automatically;)
It will not be in the list of home pages.