Here’s a thought, combining this thread with the discussion over on the Steve Neal Flo Podcast thread.
Maybe the TR guys could introduce HR recommendations into workout descriptions. Like Steve tells his riders they shouldn’t go over 83% of HR max on a 3x20min session, it might be useful to have something like “aim for x - y HR range during the intervals”, so if you’re going way over that, you know you’re overcooking it. You’d have to know or estimate your own maxHR, but for those of us who use it, it could be a useful little extra instruction.