About Renly's death, do you think Stannis got an unfair bad rap for something that's actually Melisandre's fault? Will this dynamic be repeated for Shireen's death?
Given that I don’t think Stannis planned to assassinate Renly, I think it’s unfair to blame Stannis for assassinating Renly. Frankly, I’m astounded that Stannis can stomach to work with Melisandre after that, but that’s probably another place where his wilful blindness serves him well. Hell, given that Stannis woke up from a detailed and realistic nightmare of killing his own brother to discover that yes, he’d killed his own brother, he might well need that wilful blindness. That’s some never-sleep-again horror story material right there. (And indeed, we’re told that Stannis is barely sleeping after that, and that when he does he has nightmares. No wonder.)
With Shireen, I think it will be very different. That is a death that I think Stannis must choose for there to be maximum dramatic impact - the deliberate sacrifice of one innocent child, his innocent child, to save all the children of Westeros.