Whenever Ultron appears, I think Hank is going to slip mentally regardless. It's almost inevitable, given their history together. What I observed in ROU though is a Hank with very strong convictions on handling dangerous AIs. Remender crafted a very strong ethical debate in that regard, on the sentience of AIs, real or perceived. Obviously, Hank's opinion on the issue is heavily biased, and as presented here, he feels completely justified in his convictions and actions in dealing with such matters (such as building his killer AI weapon). Vision, naturally, disagrees just as strongly, and soon their debate splits the team members as well.

So, in the context of the moral righteousness of killing AIs, no, I don't think all the team agrees with Hank's position. Which in turn may help fuel old feelings of inadequacy in Hank. But instead of being a step backward, I saw it more as a step forward, Hank being convinced of his righteous cause in this matter.

Now, at this point, discussing Hank's 'father' relationship to Ultron is like beating a dead horse. I thought Busiek had the worthy last word on the matter back in Vol 3. But I can't fault Remender for trying to find new avenues to explore in their relationship and having the two merge at the end, I think, qualifies as such. I don't see that as being a writer out of ideas (no, that's when you decide to simply kill off your character) instead, I see it as an unexplored avenue. Who may sway whom in what regard?

Yes, merged characters are somewhat cliched, but I think it's wrong to write this merger off as being worthless. For starters, we have yet to see anything concrete about their future motivations, actions, or encounters. They simply flew off at the end and that's all we've seen so far. I would, at least, like to see in what directions they take them before writing this merger off as perhaps a bad idea. In fact, I would love to see where Remender would've taken this thread but alas he has chosen to focus more on creator-owned projects at this time.