Sorry for late response I am in bangalore with the entire engineering team for SC so we have been late on answer questions. You are 100% but we need to improve SC so it doesnt allow you to configure timestamp snaps since we dont support this, only _recent.
In SC 3.6 there is a new feature to use external snapshots which is yet another option to do this if you dont want to use plugin or have other SMs or other 3rd party snapshot providers.
A late reply on the topic of external snapshots. Just yesterday I was looking into a way to tie SMO snapshots together with SC, and I remembered that you mentioned this feature in 3.6.0. I now realize that you've implemented this with these two new directives:
which is just beautiful, extremely flexible and exactly what I need! Thanks 🙂