Something that is missing from Adobe Illustrator, and would be good in Affinity Designer are Technical Illustration Tools:-
Isometric Grid, allowing constraint along 30º as well as vertical
Isometric elipses (35º Elipses, with minor axis constrained to Grid Axis)
Ability to join circles and ellipses with a tangent line tool, connecting one circle to another with a line.
Ability to delete line or curve up to another intersecting line / lines / curves with a key stroke.
1 Draw a line or curve,
2 Draw two additional lines / curves, both overlapping original at different locations,
3 Select the middle part of the first line / curve
4 Press a key to delete the part of the line / curve up to each of the intersecting lines curves.
5 Option to select multiple lines / curves and perform this to all of them at the same time would be living the dream :-)
Thanks
Gaz
3dtp Ltd