Yes, I said it was a workround. I've been using it for about 10 years now.
Liquid was made by Pinnacle and adopted, then dropped, by Avid. In case you hadn't noticed. Studio was rescued by Corel and Pinnacle is just a brand now. The programming team is based in Asia and the product management is totally different. So I don't think it would be a case of just copy and pasting a bit of code.
Clip markers were almost dropped a few versions ago - they had become so buried into the interface you could hardly find them. Fortunately they were made easier to use in PS24, and maybe Corel might improve their usebility if it is suggested to them. This forum has a Feature Requests subsection and I'd certainly support any request you made there. But don't hold your breath :-)