Over the past periods, various users (including myself) have put in questions, feature requests and what not a number of times in the forums pertaining to the Ruler & Guides.
Particularly the moveable zero point of the rulers, and the color of the guides has been an issue from the first version of Affinity Designer & Photo.
Unfortunately until now, apparently with the release of a new MAS version imminent, it appears these issues have not been solved yet.
I realise that it will take a lot of developer's work, but it is truly a serious drawback in using the programs.
Nevertheless, I respectfully re-submit my -and others' - remarks about the Drawing Aids, in the hope that they will be updated ASAP.
Here they are :
RULERS :
Moveable zero point. This would also go a ways to answering the feature request for a measuring tool.
GUIDES :
Choice of color, so as to be able to set a contrasting color to one's work.
Lock / Unlock guides with the move tool, irrespective of tool being used
Adjust guides already set with the move tool, irrespective of tool being used.
GRID :
Choice of color ( for the same reason as the guides)
Perspective grid : drag points (Horizontal or Vertical simultaneously.