I think the idea is if the Dr has a whole army of Cybermen he'll go out and try and save the universe by force. He will eventually be compromised and turn into the Master.
or the script was so crippled by; the need for meme friendly dialogue, trailer friendly scenes and a massive sense of inferfiority. That they were just left with everyone in a poorly lit grave yard with cybermen and nowhere to go.
nb Osgood interests me; great character, so she's got glasses, a big scarf, bow tie and funny shirt. She's a bit awkward but nice and loves the Dr.
She's absolutely the stereotypical Dr Who fan, mixed with all the symbols of old Who.
Moffatt then writes about her being killed as horribly as possible, I wonder what he's trying to say?