I'd like to think it's possible. I mean, after all he was a good father before he went bad. I'm sure the good is still there somewhere even though you might have to dig pretty deep.

I don't know why he wanted the baby in the first place

Kinda good, but then remember how he treated Baelfire after he became the Dark One.

^^ Ya I don't know if he even wanted it

Oh my god that face! That face was just too precious to pass up. lol. But A - I'm pretty sure his capabilities of being a father aren't the issue. The issue is whether or not that was his intended purpose with Ashley's child, and I highly doubt it was. He's too concerned about his own biological son. He wouldn't replace him.