I don't mind the change, especially as the Davros story has been so told out now I doubt we'll see much on-screen for the foreseeable future. However, I would question if Davros would have seen himself as disabled. I'm not familiar enough with the canon to know if we ever learned why he was in the chair, but I always assumed that Davros had experimented on himself while working on the Daleks. Him being a transitory phase between the Khaled evolution and the future evolution that would become the Daleks. I saw his chair as a reflection of this mid-way Dalek.
As I said, I don't mind this change but I feel it is an ultimately empty thought if they don't have people with disabilities in the 'positive' roles too. It's all well and good saying he doesn't want to associate disability with evil, but that also has to be followed by normalizing folks with disabilities within other roles too.
I really enjoyed the episode for what it was. It served as a decent introduction for the Disney+ crowd without being too convoluted. Which given this was a continuation of a 15 year old plot thread was handled about as well as it could be.
My biggest complaint was how integrated Rose was into the resolution to the metacrisis. I am not trans and don't pretend to know even a fraction of the struggles they face in our society. The normalisation of Rose throughout the episode and an acknowledgement of how even very well meaning family work to be inclusive felt very natural. However, I did not like how her being trans seemed to have been caused by the metacrisis. It felt like it flew in the face of the normalisation. The reading in the episode is Rose is only trans because of that timelord DNA influence. It felt wrong to reduce her character to being nothing more than a quirk of fate rather than just who she is naturally.
I'd have preferred a 'Lets all hold hands and the family shares the burden' hand waving than what we got. Rose deserved more than what we got and certainly more screen time. It was quite weird the rest of the family didn't go see Wilf. I get they were setting up episode 2, but in the context of the moment it felt really out of character for MumDonna.
To those confused about how Donna and Rose were able to 'Let it go' now rather than back then, Frozen wasn't released until 4 years later so it musn't have occurred to the Doctor... In all seriousness, I'd point to the scene from The Day of the Doctor where Clara opens the unlocked door for the 'clever' Doctors. Sometimes he'll look for the best solution without realising a simple one is in front of him.
The new TARDIS interior was gorgeous, harkens back to the Hartnell console room. I loved the first thing 13 did was start running around. So much room to practise running haha.
All in all, a solid.episode with some flaws. I really liked the new style and you could feel that new budget while still having a Dr. Who charm aliens that looked like they'd been handmade. I'd put it around a 7.5/8 out of 10. Good foundation, interested to see if it is built on. It definitely makes me excited for Ncuti's run.