You should test it out with those 33 installed as flatpak. If you end up with 4.7GB for runtimes, that’s basically nothing these days as far as storage goes for that amount of programs. More you have, more you benefit from shared runtimes. I doubt it’ll be less than AppImages but it’s usually the starting runtime space use that shocks people.

Better late than never so here it is:

9.85 GiB flatpak vs 2 GiB appimages/portable binaries.

And note that I could not find all the apps as flatpak, for suyu I had to switch to yuzu and I can’t believe that there is no deadbeef in flathub 🤯