Would it be possible to put all language folders inside ProgDVB-directory that is inside "Program Files" into a "Lang"- oder "Languages"-folder? That would improve order inside ProgDVB-folder (but it would not have a technical relevance; the program would need to look for language-file-folders inside that languages-folder, not in the main program folder).

I try this 4 years ago and not found good way for dll resources. That possible only for txt.

Why not delete the language folders you don't use?
I have created a batch to delete unwanted files and copy my settings to newly installed versions.

And you save 6-7 mbytes. That is size of ~one jpg or 5-10seconds video. Too small.

I also name my channel data like so :-
CL10 - 28.2° E - Eutelsat 28A, Astra 1N, 2A, 2B.tree
CL11 - 26.0° E - Badr 4, 5, 6.tree
not because it saves space, it just makes it neater and easier to locate.

Keep up the good work Prog, for me the last few versions have been some of the best and most stable.