Support regex / text substitution on widget specific configs

My preferred touch strip configuration is very basic: a couple of Date / Time Widgets (I have to keep track of different timezones in work) and a big Now Playing Widget. Usually I listen to music from Spotify, but eventually I use YouTube to do so. When using YouTube, it gets from browser (in my case, Safari) the title from the playing tab, which in this case is "{video title} - YouTube". I'd love to be able to suppress the " - YouTube" part.

For me the best way would be adding regex support, so I imagine a checkbox "Apply Regex substitution" and a text field to fill a regex, in this case s/ \- YouTube//g.