Many will like MM+. MM+ (including FP+) offers some good benefits for guests that fit certain profiles.
For example, if you are an onsite guest and like to sleep in, there's little doubt in my mind that FP+ is a real winner for you.
However, MM+ does nothing to improve the overall experience
for all guests. It simply changes it.
Fundamentally, guests judge their WDW experiences based on how much they enjoyed the rides & shows and how long they waited to experience them.
MM+ doesn't make any attraction appreciably better. Sure, there may be a point when one of the dolls on It's a Small World waves at me and says my name. Some will enjoy that. Some will find it creepy. (Can anyone say Chucky?
)
Since MM+ doesn't increase ride capacity, it's a zero-sum game. There will be winners and there will be losers. Some guests will wait less; others will wait more.
MM+ will encourage some offsite guests to stay onsite but it also will encourage some offsite guests to not visit WDW at all.
Compare that to, for example, Avatarland. Once it opens, there's sure to be more guests who will visit WDW as a result. Avatarland will increase DAK's ride capacity.
Even for those who dislike the IP, it won't prevent them from visiting WDW. There won't be examples of people saying "I was going to visit Disney World but now that Avatlarland is open, I'm not going."
However, with FP+, that phenomenon will occur.
There are those that simply cannot afford (or refuse to pay) WDW's Resort prices. Realizing that they now will be stuck in WDW's Standby lines for all of WDW's major attractions while Disney devotes 80% of ride capacity to FP+ lines (mostly consumed by onsite guests), many offsite vacationers might very well give up on WDW.
MM+ could end up driving away nearly as much business as it generates.
MM+ made sense years ago when Universal wasn't much competition, when WDW essentially was competing with itself.
In 2014, MM+ is just a dumb business strategy.
WDW should follow the examples of WWOHP and Carsland. Build well-themed lands with truly outstanding attractions. That's the smart business strategy.