Wellllllll - I don't think the MK is quite "done" with all this....
Segmenting Security, and moving it OUT, away from the ticket readers, is GOOD. Folks..... pretty soon, everyone was going to end up waiting in 7 Seas Lagoon
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Just me.... but the geography and segmentation choices look reasonable to me - making use of "the gift of space". Stuff DOES look temporary - and what a wise choice! Experience is going to tell the MK Security folks that left a hole someplace..... now, they can FIND that hole, and deal with it.
Consider the MESS that exists at MCO - to a great extent, because permanent stuff got put in, and things changed. I may be alone.... but I personally believe WDW is being rather wise to think, experiment, then CHANGE if the data indicates that Plan #1 wasn't quite right.....