Stein

Thanks a lot. 
What a pity! I am definitely more of a Lightroom than a Photoshop user.
Still -  to me, just to be able to edit the nadir of a 360 image in equirectangular projection more than makes up for the price of the software!
http://steinarnejensen.blogspot.no/

Affinity Photo isn't a Lightroom replacement Period! Lightroom is a Digital Asset Manager (DAM), Affinity Photo is not, so you can't really compare them.

Hi Stein,
Welcome to Affinity Forums
Please see my reply here regarding Lightroom.

Yes, I did say "a group of adjustments". 
You might have to make two or three presets, but it's still very fast to apply.
If you did that from several adjustments in the Photo Persona, there would be a huge bunch of unwieldy layers to copy and paste. Lots of layers is not always good. In addition, there are distortion and rotation adjustments in the Develop Persona that are much better (or much easier to achieve) than in the Photo Persona.
I'm a big fan of the Develop Persona. A very fast way of making 95% of initial adjustments.
The other good thing is, all the adjustment sliders are in one place for easy "tweaking". How long would it take to work through several adjustment layers in a group of layers ?

The best way to make a group of adjustments is to use the Develop Persona. You can make several adjustments at once (including White Balance) and save them as a single preset.
Use the Basic panel for most adjustments. Once done, use the burger menu on the Basic panel and "Add Preset" to create a preset with all those adjustments. It will prompt you for a name. Select that from the Preset: menu to apply.

Edit. I also like having all the sliders in one panel. 

You can create Presets for Adjustments and just apply the Preset to each Image.