I was reading this long time ago: https://secure.centova.com/pages/faqs/display/scheduled_playlists_do_not_109
Note that this is from the v2 FAQ.
I was thinking about this last time and actually you can support this and I really wold like you to do so. You can pass command for sc_trans to skip to next track
I don't think you read the second section of the article you just linked to above.
Refer to the part that says "Can't you just send a signal to the source to skip to the next song?".
In v3 it's a different situation as we already have a dedicated daemon running on the same server as the streams, so yes, it's possible to implement this *now* for v3. It wasn't in v2, however, for the reasons explicitly noted in the article.