I mean, it depends on the person. For me and my practice, RoS would be a little too intense. I am already prone to very intense devotional moments, which throws off my practice – that’s one of the reasons I’m avoiding any title with the propensity to trigger that side of me and I’m opting for those that focus on embodiment, like GLM + Earth.
So, it all depends on the nature of your practice. If you utilize those very high spiritual states, I would say that it would be a phenomenal stack. Regeneration will produce both a grounding and “enhancement” effect. Since I know you also delve into these subjects, I’m hoping you’re familiar with the paradoxes that come with those ideas and can understand what I mean here. A high spiritual state, but with the “inner spa” that Regeneration will bring.
If your practice is like mine, where the focus is more on the body and being balanced at all times, I’m not QUITE sure.