"I hate to nitpick, but why should I, who paid $600 for his ticket, have a smaller booking window for fp+ than someone who books 2 nights at the All-Stars and buys a 2 day ticket?"
I dont think your question is so much wrong, but more just imposable to quantify.
Inherently, with this system and network of things each guest can/cannot do, there has to be natural groupings.
All along, the majority of post that both hate as well as love FP+ and
MDE starts with "I" "I" do/don't make rope drop. "I" have kids and cant plan that far out. "I" don't have kids and can be flexible. "I...I...I..." Heck, I even fell in that mindset early on.
But back to my point...a system this vast cannot accommodate each and every guest's individual preferences, touring style and length of/frequency of visit. So naturally they need to create 'groups' and may times those 'groups' will overlap with an individual's plans. But they have to draw lines somewhere.
So yes, as an AP, your ticket worth in your eyes more then a guest staying at a Pop—but your a resident (I assume) and can go more frequently and spread out over the year. But what about mine? I am a AP holder but only get to use it on 2 trips a year because I live out of state. OK, so do we disqualify type of pass as a defining factor for 60-vs30-day FP+ reservations?
OK, then what do we use? See, its not so cut and dry, and very gray.
Going on your issue, there would need to be massive benchmarks that would result in too many more dates/options for the average guest to handle, so:
7+ days or more on site get 60 days
5+ gets 45 days
3+ gets 20
2 days gets 15
APs regardless of resort stay get ??
There is no real 'fair' way to do it other then to open it up for everyone. But then that brings us back to one of the main drivers for this, to attract people to stay on site.
its not just black and white.
As it is now...I think the 30 days is a huge compromise and you win vs same-day booking.