I'm using TC for many years now and I'm very satisfied.
Originally (Win95...) all folders were the same, but current Windows versions have certain security settings for \Program Files [ (x86) ] and different ones for user-specific data in \Users\xxx
Today's installer of TC (still) uses the original (outdated) UI and uses outdated settings: there is no (good) reason to want (or even allow) installation in a root-folder and put ini-files and user settings in the program folder...

Alternatively/additionally: make it fully portable

thanks in advance, rgrds, Reinder