Hi Chris, Firstly thanks for the update.
I have concerns regarding the changes/enhancements with the new personalised Check-Out Icon.
The beauty of the standard old green icon was that it was always on no matter if you selected it or not. The new one in my testing does not do this. It only shows when it is unselected. In addition, the old one was larger and persistent you could hover over it and it would reveal the person who has it checked-out. The new one disappears when you hover over it - this is a design issue as I should be able to look at the view of documents and quickly identify checked-out documents whether or not they are selected. So the new design identifies documents i have checked out only if I have not selected them? Also, hovering on the ellipsis gives no information on the checkedout status. I have since had to add the old checked out to column in my views to at least remediate this.
I think the eradication of the old classic list\library view will only be successful if you can successfully port the same functionality and user expectation across to the modern views. I do hope this is only occurring in my tennant as there are a lot of solutions out there that will be effected by this. Also, the addition of another variance in visual indicators and action nuances is a double edged sword - it will frustrate the heck out of basic end users but keep us 'experts' employed :)
Thanks for the update - very timely although the changes have been problematic - I appreciate the comms.