I thought the opposite of everything you stated. Great episode, Sacha was great as The Master.
There was nothing that made him stand out as the Master, the same as there is nothing that makes JW stand out as the Doctor. Both actors are are great actors, but inside the Whouniverse, atm, they quite bluntly, suck donkey balls.
The Doctor needs a "I am the Doctor" speech as well as not been confused and saying "i don't know" to every question asked, and the Master, needs to be more eccentric/quirky/menacing.
They both are doing nothing that shows they are Time LORDS.
I quite liked John Simm as the Master.