Something I've seen is that the TARDIS has the wrong remat animation (I didn't really know what to put this under, I'm suggesting that someone looks into this). 

From what I can tell, it's using the demat animation for rematerialisation, when it should be using a reversed version of that animation. I wanted to bring this up because It really doesn't look right.

What I am referring to can kinda be seen in the 3 year anniversary trailer: https://www.youtube.com/watch?v=nsNCRebKe2w, look closely at the TARDIS when the landing noise has finished.