@
ukkoss_project - I note one of the testers made a comment they would have been happier if Calibre had been presented in Finnish rather than English. Translations are done by volunteers, maybe someone fluent in Finnish on the UKOSS team or a Tester would like to put their hand up.
Did any of the Testers watch the Grand Tour and Library Management videos, IMO they should be pre-req's to installing calibre. Although they're a bit out of date in the details, they cover the essentials
extremely well ==>>
https://www.mobileread.com/forums/sho...d.php?t=118596
Whilst, some of your UI suggestions have merit, there's the problem of the existing user base - 23M installs, and 3.5M active users. The reactions to MS's introduction of Office Ribbons and Windows 8 Metro are apposite examples of the reaction one gets to changes in User Interface of any application.
BR