Mega-ditto. I edit photos after a photo shoot. I might have hundreds of photos that I am editing. Handling photos one-by-one opening is a deal killer. Lightroom CC on the iPad allows you to place photos in albums and you can see them in a strip at the bottom of the screen. When you want to export multiple photos you click on the first one and then shift-click on the last one and you've selected every photo you need.
Affinity Photo seems to have started as being a Photoshop clone and morphed into trying to be a Lightroom clone. For people like me who work with many photos at once, Affinity Photo needs to adopt more of Lightroom's goodness and innovate from there.