Just to give it a bit of a break down...
Episode 1: Written by Russel T. Davies (British), Directed by Bharat Nalluri (British).
Episode 2: Written by Doris Egan (American), Directed by Billy Gierhart (American).
Episode 3: Written by Jane Espenson (American), Directed by Billy Hierhart (American)
Episode 4: Written by Jim Gray (American) & John Shiban (American), Directed by Billy Gierhart (American)
Episode 5: Written by Jane Espenson (American), Directed by Guy Ferland (American)
Episode 6: Written by John Shiban (American), Directed by Guy Ferland (American)
Episode 7: Written by Jane Espenson (American), Directed by Gwyneth Horder-Payton (American)
Episode 8: Written by Jane Espenson (American) & Ryan Scott (American), Directed by Gwyneth Horder-Payton (American)
Episode 9: Written by John Fay (British), Directed by Guy Ferland (American)
Episode 10: Written by Russel T. Davies (British) & Jane Espenson (American), Directed by Billy Gierhart (American).
It's no doubt been posted before, but it's relevant to my next point. Episode one was written and directed by British people - the next few episodes might seem different. There's only two British written episodes (and one co-written between a Brit and an American) - but we're the best at poking fun at ourselves. I do trust the writing team though - they've got some good names behind them. It also still has Russel and Julie as Executive Producers, making sure everything stays consistent.
Part of me thinks I only wrote out that list 'cause I'm bored :P