I would like to ask some questions before voting.
I would be opposed to this change as well. The player is already heavily advantaged over the AI and military control of his AI allies will make it even easier. And in MP, one could always refrain from inviting allies to wars, no? I know that taking control will be optional, but, given the limited number of changes that can be implemented, this just seems to me a luxury.
I can't help but respond to this, since you singled it out and ignored many other, more silly, expensive changes that are even more of a 'luxury' and less beneficial (reports on what happened during a ruler's reign say).
Perhaps you're right I suppose its not necessary strictly speaking, but has a specific use & at 5 points, much cheaper than many other items for which I cannot think of a good reason to include (command to set a specific tech level - seems contrary to the way tech is handled in the game, perhaps a +/- 1 or something option, but to be able to so radically alter it, no thanks) No one is advocating for this change because they want the game to be easier, but because we want wars to be conducted in a more competent and realistic manner.
I think this opens up the later scenarios to be potentially played as shortened games, so that a limited number of players could play out the Thirty Years War, War of Spanish Succession or Napoleonic wars without needing quite so many humans. Basically I could just get one other person and we can have a blast playing any of those as one side or the other, as opposed to now, where I don't think 2 people could play the 1795 or 1617 scenarios especially and model the conflict particularly well -- and yes, I know that this is not HOI, but there aren't exactly a plethora of games that model some of these conflicts (hope you like AGEOD if you're looking for one).
Its a mere 5 points, and will let me & others better capture the epic scope of those great historical conflicts, that seems like a bargain to me!
I regret not getting in the 'colonial war' option as in Vic before the deadline, that seems to have historical parallels and would be quite useful -- though it'd have to be done in such a way as to not prohibit it escalating into a full-war (unlike in Vic:R).