So this is probably not something that all people need and maybe not entirely fair to say it's broken, but coming from other software and trying to switch to Affinity as my main software, one thing is extremely frustrating is the export.
In most of the other apps I have used, when working on a file and going to export, the last settings are always saved, i.e. format, location and even the last file name entered. This is really handy when you have to export a series of images and are working on many different projects with different file locations.
IMHO the export location should be stored in the design file and last export settings should override any presets that keep being defaulted to.
Sorry if this is covered somewhere else, I wasn't able to find it, but if it is, please point me to that thread. If not, would love to see this implemented fully or at least partially in any future release.