Given an arc of circle:
If I add arrows on both ends I get the following ugly result:
I'd rather like to see:
I've managed to get the above manually, by converting the stroke to a path, and either editing the nodes to shape the arrow as I wish as shown below,
or, better, select the arrow (converted to a path), enter the group (e.g. double click and click on the arrow head), rotate and translate the arrow heads:
But how could I obtain a proper positioning of the arrows in a more straightforward and faster manner?