In reply to Miroslav Glavić.

Things should basically stay the same unless there is a compelling reason for change. Changes take work on the part of users; how many spend how much time in the WordPress dashboard, and of those with concerns, how serious are they and how frequently do they arise?
There should be a use case made for changes, particularly those that affect function—lay out the specific problem, how the proposed solution would fix it, and what else might be affected and how (knowing that the faster the decision is made, the more likely it is that unexpected consequences will be found).
I have been following WP Tavern for some time, but maybe have missed a lot of discussion, or not. However, there are a lot of site owners/managers who probably don’t even follow as much as I do; they will also be affected by any but superficial changes. Maybe an optional changed version, so that folks can gradually work their way in, as in the change from classic to block themes?