Hello, i started working with improved prefabs as soon as 2018.2.X Improved Prefabs preview came out, and continued with beta straight away, so i think i have enough hours in it to post some observations. I'm not really a power user since i'm using Unity for mere three years, but i'm not a rookie either so speed of the workflow is quite important to me, and that's where my objection is. Removing the inspector from prefabs and putting the open prefab button brings two more clicks (open prefab and save, auto save slows things to death) to the workflow, which is a lot when you're dealing with many prefabs. While the separate prefab workspace is neat for initial visual configuration od the prefab, i usually don't find the need to use it ever again after the first time and most of the dealings with the prefab afterwards consist of fiddling with it via inspector, and having to enter the prefab mode every time just to see if that's the prefab i wanted to use and then edit the inspector values is time consuming. Also, ability to bulk edit the common prefab components in the project view has been taken away from us, so now we have to drag every nested prefab into the scene one by one, select them all then edit the components in bulk. Not a function i use often, but still i believe it's a step back from the usual. As someone said, the whole thing seems a bit over engineered. Deeper prefab levels are something we all waited for, but i'm not sure the whole prefab workflow is the thing we needed.