I tend to feel most years that the best bit is between 11 and 6 couples, when people are learning and you are getting the hang of who they are, and it's not too long a show. 15 is a bit long.
Last year I didn't enjoy. I felt everything was manipulated and hammed up, I had to mute Brucie or Bruno the moment they came on, while I didn't dislike anyone, I only really actively liked Mark and Iveta and sometimes Sophie and I gave up watching before the end of the series. So far, this year feels much better to me. I think Tess gets more comfortable every week and I love Claudia, so that's a huge improvement for me. (I'm fond of Brucie but that means I don't enjoy seeming him not at ease.) I really like Steve, Jake and Sunetra, and Jake actually has a chance, which is rare for the people I like!
My niggles (apart from don't get Donny Osmond back) is that we don't really see the training any more. That makes it blander than it used to be and much harder to get invested in the celebs. That seems a mistake to me, though I think it's done to protect them and avoid accusations of biased editing.
And I think the voting system now favours the best and worst and gets rid of the middle, and the middle, the non-comedy learners, are my favourites, they are the interesting bit of the show for me. But I feel the show now sees them as filler, and the point are the best and the 'comedy'. But that's been true since Widdecome really. I wonder if some of my favourites from the early years, Aled, James, Letitia, people like that, would last long now.
Generally, so far, it's a good year but if you're not getting invested in the celebs, OP, I wouldn't struggle through. Having felt that on some previous years, I don't think it's worth it.