Hi and thanks for taking the time to write this. I'll try to answer here, but the best place to do this would be the github :)
First of all, I know the UI/UX is not great, but this is the best I can come up with without some utterly complicated way of doing things (adding checkboxes on existing UI...) which would be hacky and could break with every blender version (if only doable). So yeah my thoughts here are : the UI/UX is not great, but the user does not have to use it a lot, once the presets are done, it is not an operation you repeat every hour.
Secondly, I'll try to explain how the addon works : it programmatically browse property categories (scene.render, scene.cycles...) and get every property automatically, then present them to the user. This allows the addon to always be up to date with newly added properties (eevee raytracing for example) with new blender version without any dev action. But the downside is I cant know the number of properties to show, so I have to keep them in categories in order to prevent "infinite scrolling popup".
The properties are not all saved, meaning the preset only applies some, the others are left as is (which is important giving the fact that the addon allows the user to save EVERY available properties) so I made a "default setup" by enabling a bunch of them according to my logic and my needs when needing a render preset. This default setup is arbitrary, hardcoded, and could change if users report issue about that, I have no problem with that.
Some infos about the UX :
The things I can do to improve UI/UX :
What do you think ? I invite you to continue the discussion here : https://github.com/samytichadou/render_preset_blender/issues/new
cheers
I really love this add-on, it really should be added to blender's default add-ons. But I do have some gripes with it. I find it really confusing and difficult to set up new pre-sets, I sat there for about an hour just trying to understand how it worked. Specifically what I mean is when click the + icon to add a new preset and checking "show unsaved properties", first- everthing is separated into catagories, it would be so much easier if all the settings were in one place. Second- when enabling properties to save, I'm having to go through all in one go and search for the setting (again-kinda tedious), 'check' that setting and enter in the value I want. All at once. It seems that if you dont do all your settings at once before you click ok, you lose them. Certain cettings are left unchecked by default so I kept having to go back, re-check, add the value, search for the setting, re-check, add the value, click OK, then click the pre-set, click the "Apply Render Preset" button, in order to verify if all my desired settings were set to that preset. I just found the whole process very tedious and frusterating. It would be so much easier if instead of using a separate menu, I could just adjust all the settings for my newly created preset within the plain render properties tab. Idk if that's even possible and I imagine it's probably a big ask. Maybe I'm just using this add-on wrong, if so I apologize. I just feel things could be made much simpler. Thanks so much for the add-on though, it's super handy all things considered.