Currently, you can only resize a frame from the bottom right corner. It would be nice if you could resize a frame from any of the edges or corners. This would be nice if you want to put some nodes into the left/top of a frame.
Currently you have to resize the frame, reposition all of the nodes, and then you have some room available.
also, sometimes a node is overlapping the "resizer" triangle in the bottom right, and you have to move a node out of the way just to resize a frame.