I am not sure about Peter Capaldi. I just think they could have made a better choice. However, I will reserve judgement until I have seen the whole of the first series.
Am I the only one who thinks Steven Moffat is driving this show into the ground? It's still okay, but not as good as it was in the David Tennant days. I watched Series 2 the other day and I just think Russell T. Davies is so much better?
ecclestone series good > tennant > good but going down hill story wise and it took some time for him to grow on me > brickface > rubbish and a kids program
the ecclestone season was the most adult imo and it's slowly declined