And imagine if every person who loves only 1 feature wants his own app with only that feature. We can't create 10 different apps

- 1 app for Explorer navigation pane, 1 app for title bar, 1 app for disabling breadcrumbs, 1 app for Up button, 1 app for address bar, 1 toolbar app, 1 status bar app, 1 icon overlay app, 1 file operation mod app. In that case, if a user wants all enhancements not only will he have to install all 10 but the performance impact/memory consumption on Explorer of 10 separate shell extensions will be higher.
The idea is not practical.