This is related to my last idea/bug where you can't extrude sketches unless you have 'Show Profile' enabled, which I personally am not a fan of. As such, I prefer my sketches to be simplistic line drawings with no shading, filling-in, etc.
As such, when I go to project certain sketch geometries onto other sketch planes, in the case of say a rectangle with fillets on all four corners, I have to manually select each of those eight items (four lines and four corners.) It would be nice if I could perform a 'Select loop' where it selects the entire perimeter/connecting segments of what I selected. In this case, selecting one corner, then performing 'Select Loop' would select the other three as well as all four sides. Being able to do this with a keyboard modifier (or at least a double/triple clikc or the like would be even better.)