In reply to Andre.

I'm not sure that pulling out the block selection into a wider menu is necessarily a good idea. I do see where you're going with this, but really, after using it a bit, and learning what blocks exist, then it's much faster on a new block to just type the slash / character and then type in the name of the block you want to use.

Sure, having the list of blocks fully visible and categorized up top has its initial benefits, but after the learning phase, you kinda just end up searching for the specific one you want anyway. Having a big menu isn't quite as fast as searching by name when you're using what is essentially a text editor. You're already typing, switching to the mouse is slower.

If the list of blocks grows through plugins adding them and such, then a big menu becomes more difficult and unmanageable. I realize the list of categories is fixed at present, but heck, look at how many plugins want to add their own top level menus and such. You think plugins won't be adding categories too, and wanting their own top level menu items? An interface cannot have both everything visible and also be indefinitely expandable.