Have to agree the writing isn't as good this series. But it's not just the writing.
I felt in the first episode that while Sudekis and Swift fell immediately back into character as Ted and Higgins, Waddingham and Temple weren't quite the Rebecca and Keeley from the first three series. But it was their performances, not the writing. Waddingham in particular seemed to be 'acting' too much.
If they had to bring it back, then a woman's team was a great idea, but it's not found it's feet. It would have been far better to have jettisoned Roy Kent - the ongoing thing with him and Keeley is now tired - as it's irrelevant to the women's team. Ditto Coach Beard. I like both characters but a couple of cameos rather than remaining as main characters (despite them being co-creators).
And I really miss Trent Crimm.