Confirmed: FASTPASS Return Time Enforced

The rumor about changes coming to the FASTPASS service (which was floating around in many other Disney-focused websites and blogs) has finally been confirmed by the Walt Disney World Resort.

Indeed, starting from Wednesday, March 7, 2012 all guests will be expected to return within the return time window that is specified on the FASTPASS ticket that they received. This means that if a guest received a ticket that states "Return Between 10:00 a.m. and 11:00 a.m." they will have to come to the attraction and use their Fastpass only between 10:00 and 11:00 a.m. Late arrivals will NOT be honored any longer.
There are, of course, some exceptions. Guests that arrive either 5 minutes in advance or up to 10 minutes later will still be able to use the FASTPASS queue. Late FASPASSes will also continue to be honored in case of an attraction downtime, a delay in meal service or personal emergency. Disney has stated that the reason of this change was to give guests "the opportunity to enjoy [more] this great service."

What is your opinion on this change? Previously, guests could use the FASTPASS service even five, six, seven, or even more hours after their return time window expired. Now this will not happen any longer. Is this a positive or negative thing? Feel free to share your opinions and comments on this very interesting subject!