Not really sure why anyone would be mad with the new Conquest mode changes. I was already complaining about this before they changed it and I'm glad they did.
Every single conquest challenge has been a landslide because of bandwagoning which I even did myself because I mean hey, it gives me prizes. But now I can actually pick the characters I like and try to support a specific side, results will also be more accurate to who gets used more, because it in end thats what its all about.
Also, I see where they're getting at with the once per day thing. It's kind of there because they want to see the character's popularity amongst the whole world, not just you. They don't want to see a single person doing a marathon of a single characters so that they can win. Yeah, the points aren't a whole lot, but when you're one amongst thousands of people those points add up fast. That's what its supposed to be.