Thank you. As a consumer who has a trip at the Grand booked for August, this does affect our plans, since there are actually 2 MK evening EMH's that week and one Epcot evening EMH. The monorails are almost always packed when I leave MK in the evening, and while less people take the boats, they are often full because of the low capacity. To force all of Grand and Poly's guests onto the boat will be ridiculous.
And if this change results in the monorails being fixed, great. But I don't think the monorails are actually being fixed - it just seems like a way to draw out their lives as they die a slow, painful death. If there was any good news to be shared, Disney should've mentioned it (they could've said something like "in order to conduct a gradual refurbishment of our monorail fleet blah blah blah"), since the reaction to this hasn't been positive from the vast majority of monorail resort guests who post on this board (and others).
And there is more to this than EMH. What about someone who's staying at Contemporary and has dinner at Citricos? MK closed at 9, so the monorail stopped at 10, and dinner ended at 10:15. Instead of taking an 8 minute monorail ride to CR, the route becomes a lot more frustrating and time-consuming.
I know Disney's doing this for a reason, but I don't think the reason is positive. At least not from a guest standpoint.