Given that an MK view room can be as low as the 3rd floor, I would not spend extra points for those rooms.
I do think that people who end up getting a higher floor have a wonderful view and experience, there is no guarantee of that, even if you request it. And, everyone requests having a higher floor and at some point, if the resort is full, people are going to end up on the 3rd, 4th, or even 5th floor so that could be you.
We originally booked SV for part of our summer trip. We ended up changing to LV because DH really didn't want to be 1st floor. With a LV, we have a much better chance of getting the higher floor and it was only 9 extra points for the 3 nights we will be there.
If I ever spent all those points for MK view and ended up 3rd floor, I would be disappointed. I will view the MK from TOWL or the other parts of the resort.