Just a pondering. I do get these random thoughts pop up from reading threads. You will get used to them.

So, a fair few people appear to lose benefit and need to do the MR route.
I wonder if it's the thinking that you are transferring/ moving when you are actually a new claimant as well?
The benefits have similarities but differences. Being on DLA initially is likely to go against you in a strange way- bear with me.
DLA forms asked you what you would spend the money on if you were successful. I filled all that in.
They encouraged you to have hobbies, go out with friends, they were going to offer you extra money to enable all these things you couldn't currently do. You were encouraged to socialize.
Then they change it all to PIP and the above goes against you! You are considered as able to function and communicate and mix with others.
Result no benefit.
I can't help but think that not only is the PIP designed to not award points, it's relying on those on DLA to have some sort of life. Result no benefit.
It's possible that a percentage don't satisy PIP because they have altered it. What the government hasn't said is what benefit these people are then entitled to, unless it's ESA premium or something.
I am still waiting on my assessment points. I will go the MR route if it looks like it's wrong. But, it is possible that I don't satisfy the descriptors enough. I bet you I scored 7. Will let you guys know. Hindsight, which I'd asked when I called. Reality I forget things.