Not Long Now
I think the UHP is safe - it will change so that non 24hr units do not get 100% but in the main, it will not be taken away.
I think HTD is less of an 'institution'. I also believe that if the management were able to take it away anyways, and did so arbitrarily, they know they would be very unpopular.
This 'offer' may be a way for them to make the savings in the long run without putting peoples noses out of joint.
Maybe someone with more of an idea than my idle guessing will step in with a definitive answer