If you travel every other year, you can still make APs work if you're willing to do twice every four years instead. Loop two years in a row and then take two years off. Schedule first trip at start of AP and 2nd at the end of AP. Honestly, ticket prices are high enough that if you can find a trick to saving on them, it's worth it. Over a period of four years, looping instead of every other year would essentially drop ticket costs by almost half.
Here's the thing about the 25 point trick for direct benefits. It's almost certainly going to be increased to 50 points. If I were DVC, I wouldn't even make the minimum purchase for current buyers 50. I'd leave it at 25 but stipulate that 50 direct points is the minimum necessary to qualify for direct benefits. I think something like that is coming. soon. That, combined with the fact that DVC obviously believes that perks sell (at the last meeting in Dec they directly stated more perks were coming) I believe means that more perks are coming, but at a higher buy in price (50 points minimum).
Right now, since DVC typically grandfathers current owners, buying into possibly more perks later at a 'soon to be gone' discount of 25 points seems to me to be a bargain. I don't think it's a bargain that'll last.