APs generally level the playing field, switching the balance away from those who spend all day, everyday online. They make you use your brain to work out the best use of your time rather than reward those that sit in front of their monitors for 12 hours straight and consequently closes the gap between the higher echelon players and those back in the pack (which can only be a good thing for future competitiveness, in my opinion).
I know of an extremely popular online game where the AP system is what actually makes it and the community that plays it so great and I see no reason why THP can't emulate it and go on to better things.
Having said all that, I do have a lot of sympathy for those players who went Gold before this switchover. Such a dramatic alteration to a game should never just be dropped onto a community when money from paying customers is involved. It's one of the main reasons why I never pay for and will continue never to pay for my online gaming.