As a reseller in the latter category (my company's system is tied into Disney's and we issue tickets on demand), going to tiered multi-day tickets will still be a logistical nightmare for us. Our e-biz department already refuses to create an algorithm for the one-day tiered tickets (customers must purchase them in-person at our one of our retail locations because it would require "too much coding" to set up tiered one-day tickets for WDW and UO on our online shopping cart) so I can only imagine the hoops we'll have to jump through to get tiered multi-day passes into our online marketplace. Furthermore, my company currently allows customers to return their unused tickets for a refund; I imagine that we will see an exponential increase in the number of returns/"exchanges" (we don't upgrade tickets but guests can return their original tickets and re-purchase new tickets) because customers have changed their plans and will no longer be traveling during a Value/Anytime/Peak period. There's also the education factor--customers will need to be counseled as to which ticket product they will need based on the dates that they will be traveling. As one member of a two-person team that issues approximately $3,000,000 in WDW tickets annually, this change will likely make my life MUCH more difficult.