I don't know where else to put this. A comment/wishlist forum would be a great add... I think it's important to hear user feedback :)

The new UI/UX of v16 is a bit disappointing. So many UI elements that normally signify fields, sections, change of content, data to edit/enter, etc., are gone. 

For instance, the UI of sending emails.  It's just white. No signifiers of of where to click, contextually different information etc. It's confusing to look at.

This is the case with so many UI elements. Especially form views. Again, no hints of editable data. Keep in mind, many older users use Odoo!

There are many great new functional features that we're very happy to have! But, it seems Odoo is trying to get too modern with UI design. Efficiency, accuracy and ease of use is paramount.  Function over design in ERP.

Just some constructive feedback for future editions...