Same here. I watched a lot the classic shows but Sutekh never stuck with me.Okay, I really need to start watching Old Who because when it was revealed that it was Sutekh I was like "who the fuck is that?"
I throughly enjoyed this episode, first one this season. It wasn't perfect but having so many red herrings and setting up an anticipated plot lines which suddenly turned left. I thought that the software/OS that Susan was going to give to the world was going to be the big plot pivot but that now seems to be moot now.