Ten had his dark times. Yes. But if you noticed, there was usually a "What the hell have I done?" that accompanied it. Or a "Is every living creature about to be wiped out by you." Making it pretty obvious it was a 'lesser of two evils choice.

I've been watching DW for the past 30 years, so I know it's not light. It always asked the hard questions - and no simple solutions. I'm pretty aware that it's chuck full of dark-times. But the only time I recall the Doctor ENJOYING killing others was when Seven blew up Skaro. And even then, it was a bit of 'last resort.'

That's what bothers me: Eleven seems to LIKE and ENJOY it. That's just not the Doctor to me.