Tabs are great - they allow quick context switches and of course are something that should be included. It’s great that they can be themed to match whatever style the user likes too - but what about that pesky title bar on the window?
It would be great if the title bar and tabs were merged, like in Chrome. This would remove the unsightly bar that isn’t matching my theme at the top of all the windows. It would also remove a chunk of basically unused pixels as well - something that seems to be a goal given the design of the application and website.