I was concerned about Moff taking over the writting for the series, but he has proven to be pretty damn good. The season finale was excellent.
There were no worries from this end when The Moff got the job. Having grown up watching his shows (Press Gang through the teen years, Coupling through my early twenties, Jekyll through the lates, the DW episodes he wrote for both Chris E and Dave T in seasons 1-4) he was always going to do an excellent job.
It's just amazing to me that such a talented writer hasn't either been given a big job like this earlier or snapped up by some US studio or other.