I love the flexible content field, but when there are a lot of blocks, it gets hard to manage.
A button to collapse all so you can find the right block you want to use would be helpful!
Also, maybe colouring / separating the blocks a bit more so you can easily distinguish between one block and another?
It has been awhile and I was thinking that this shouldn’t be to difficult and the basic function isn’t!
I created a small function that creates a button for each flexible field on the page and when clicked it toggles the .-collapsed class to the fields. I’ve not tested this in depth, but adding this to your functions.php gives you the basic feature.