Roose is badass, but if I were him, I'd disown Ramsay. He's stupid even though he listens to his father for now. He can grow thick in his madness and arrogance later on, which means that he can try doing something stupid like assassination attempt on Roose to claim his father's lands as his own. The only thing I could whine about in this pic is that Roose's eyes were cold, almost white, like ice(while Ramsays were a bit darker, but similar). Nonetheless I just simply love your drawings of ASOIAF characters.
He is, but he's calm and he thinks a lot. People fear his silence, Ramsay is more of a berserker. I can see Roose trying to become the new king in the north if Ramsay's letter was true. Lannisters are losing the grip on the Westeros, Baratheons are in really bad shape, only Stark kids that matter(excluded Arya on purpose, she's an acolyte in a neutral temple) are either among the half-wildlings(childish Rickon taken north-east by Osha) or kept undercover to be manipulated later on(Sansa)... Daenerys is plain stupid and naive, focusing on Meereen and Aegon.. I think he has the best chances if Dorne will support his cause.
And there's Catelyn from which we didn't hear a word in last book as far as I remember..