A few thoughts.
1. I still haven't seen the Chibnall/Whitaker run. I still plan to give it a chance at some point. Just haven't got round to it.
2. That said, in broad strokes, I don't mind the "PC" stuff. I'm not going to derail this into politics, but certain aspects of what are commonly derided as "PC" track to my political leanings. I do want to see such issues handled well, though, if you're gonna do it. I appreciate good representation and messages that I tend to agree with, but come on, at least handle it with a little deftness. As an example, I've been watching Supergirl since it premiered and generally enjoyed it, but in its first episode back in this final season after its hiatus, they did some kind of smash-you-in-the-face unsubtle MESSAGE INCOMING stuff and I was just like "Ugh. I can't. Sorry" and turned it off. I don't object to the content of the message. I object to the method of delivery and how uninteresting the writing was for it. If that's how the Chibnall era goes, then I expect I'll tolerate it at best.
3. Pretty much the entire Moffat run (Smith and Capaldi both) were fairly unsatisfying. Moffat worked best as an episode writer rather than a showrunner, and his excesses hurt the series, in ways that reminded me of the JNT era. And just like the JNT era, there's plenty to like about the Moffat run, but the flaws are incredibly glaring and difficult to ignore. As a result, I LOATHE Moffat as a showrunner, but love a decent number of the episodes in his era. The greatest sin, though, of that era was keeping Clara on another season. Her story was done at the end of Season...12? I think? Wherever she goes off to find Danny Pink's lost kid or whatever. The season, which had been a mixed bag, built to that point, and then reached its natural break point, and off she went, leaving the Doctor behind. AND THAT'S WHERE IT SHOULD HAVE ENDED. Sure, Hell Bent is a great episode from the next season, but Clara and...uh...Ashilde? Was that it? I dunno. Whatever. Arya. Clara and Arya were more irritating as characters than interesting. The Mel season was a lot better, and way better than I expected, but it was also brief.
4. I'm glad they're bringing back Russel T. Davies. I most enjoyed his era. That said, towards the end...it got pretty wobbly. Davies tended to spin into these grand stories that just didn't pay off effectively, and I did not love the "Season of Specials" that they did that one year. Or maybe it was 18 months? Whatever. That sucked. They need to get their production schedule settled.
5. I'm fine with keeping a "team effort" thing with companions, provided said companions are themselves interesting. I actually enjoy the really old eras of Doctor Who when the companions did a lot more. Like, the 2nd Doctor with Jamie and Zoe. I liked that. The Doctor doesn't need to be an action hero, although he or she can still be the magic space wizard. Still, no problem having a support team for said wizard. Just make it interesting.