I want to point out that it might be useful to have option to edit blocks in mesh modeler in their place on map, not above because there aren't any reference if you have to create some transition or something which is based on block next to the one you're editing.
To explain what I'm talking about, here are the pictures with description :
1) This is where block is located on map (block which i want to edit is in the middle)
2) This is position of that block when I go and edit it in mesh modeler (it's the same position if you go and create new block or edit an existing one)
3) If there are some blocks above the one you want to edit, it opens block in mesh modeler above all those blocks
Unless there is any particular reason it acts that way (I haven't found it useful when I was working with blocks), I would like mesh modeler to open block in its original position on map so changes can be done with clear view at neighbour blocks
I hope it is all clear now
Cheers !