I think the only thing I'd prefer is a way to control the smoothness and vectors on a node and their length quantitatively.
For example, right now, I can't create an exact circle with the pen tool on its own right now, since I can't be sure the vectors coming out of each node will be perfectly symmetrical.
But if I could control how long both vectors coming out of the nodes are, I can easily round them. Right now, this tool would mainly be helpful for making face shapes for me. I can keep using circles to round a node, but looking being able to have quantitative controls over them would be much nicer.
Imo, this can be done in two ways: In either case, I first click on the node, then for the left and right vectors coming out (assuming not a sharp node), I can either:
Control the vectors using a value for an angle and length (ie. circular geometry).
Control the vectors using a relative X and Y distance away (ie. rectangular/Cartesian geometry).
Imo, such a feature could allow users to control the nodes and the vectors coming out of it nicely.
My only issue with such an idea is that may add a bit of complexity to the elegant simplicity of Affinity Designer.
It would be nice if this was possible.