On Windows, vanilla ONI creates the directory:
%USERPROFILE%\Documents\Klei\OxygenNotIncluded\mods
does the Modloader use this directory? if not currently can it changed; or at least use something like
%USERPROFILE%\Documents\Klei\OxygenNotIncluded\modloader
I don't like and will avoid at all cost putting user content into managed directories ( like OS install paths, System library paths and on windows anywhere under %ProgramFiles% ). I view it as poor digital housekeeping.