[spoilers] Harry and Lucas

[TygerBright]

while I wouldn't go so far as to say that Lucas doesn't deserve it, I think at the moment he wouldn't be right for the job. He might still be a brilliant spook and have the skills required for the position but whatever demons and problems he brought back from Russia might rear their ugly head at any time, making him a liability (something discussed somewhere else).. I also think that he distrusts politicians even more than Ros does (present tense ) and I just can't see him play ball, no questions asked, I'd guess that under certain circumstances he might be crossing that line between "creative initiative" (i.e. running off doing things his way and f*** Harry ) and subordination.
OTOH, it all depends

Spoiler

on whether Ros made it out of that hotel or not. If she did - it'll be her job. Maybe even more of a desk job if she sustained injuries that prevent her from going out in the field again. Other than the HS's office )

The newbies though seem too young (unless a) there are other cast members we haven't heard of yet, or b) one of them will be given the job in a political move ...)
I've got it - Ruth will get the job .. and Harry shows her the ropes .. among other things