The HFR (aka BFR) isn't that much different now for a private H pilot - one flight every two years, R22 or R44 cover each other and anything else in the single engine helicopter class (e.g. B206, AS350 etc).
The original kerfuffle with R22 and 44 being separate types was going to be a shambles, but they acted on that so it's pretty straightforward again now.
Transition to Part 141 or 142 for schools won't be too onerous either I don't think - they just need to get organised for integrated theory training if they want to offer a 100 hour CPL course; if not, keep doing it pretty much the same with a new ops manual but run a 150 hour CPL. Basic instrument training is the other main difference, but a NVFR capable 44 would allow you to do that easily enough, which most schools would have access to at least.