I remember a few months back the fuss over the slightly non standard selection in Sketcher.
Well yes i hope it will always be possible to use Single Click in Sketcher and i hope you will not implement Double Click convention when working with drawings. But this is up to you in the end.
If people want to decide on a 'default' colour scheme, please say. So far it's only blue for selection.
Well maybe Blue for BluePrints is the one? About consistency:
I think the only thing we need to be sure we do is be consistent across FreeCAD.
Here it might make sense to change current selection colour from blue to green. If "hover" would be implemented probably Yellow should be used? But again if Blue will be distinctive DW colour it probably could be used for selections too.
For now, I think for now keeping to what joe did makes sense. i.e. automatically calculating the scale and position. I see your idea could be useful, but I think would be better approached using python scripting.
Yes controlling this form Python is quite common request:
That would allow for example to crate macro for new Drawing Workbench purposes too and to use built in powerful Orthographic Projection tool. If you ever decide to give the option to write Orthographic Projection tool presets directly to drawing template as mentioned above that would be great but sure probably more demand for this would be needed. In the end again it is developer choice.