Adding my voice to the need for even a basic implementation of arrowheads, as it stands even powerpoint is more effective! It's pretty clear Affinity are not interested in those of us who require such a feature for technical/scientific drawings, and instead the focus is on more artistic outputs.
Sadly the only real option is to leave bad reviews on the App Store and move on, unfortunately they've already got our money. The only way companies will listen is if it begins to affect their bottom line. Anyone have any good recommendations for alternatives?