No, it wouldn’t work. It was already tried and failed miserably because Incursion was the only gametype that got voted for. Even when the Spotlight Battle was Incursion on Overgrowth, people were coming into the other queues and ONLY voting for Incursion. I’m pretty sure that the reason that Chaos Rumble worked was that people who wanted to play Incursion were staying in the Incursion playlist, while people who wanted either of the other two were searching for matches in Chaos Rumble.
Now, speaking for myself, I’ll say that if the queues are changed to work this way I’ll quit the game and ask for my money back. It was a horrible experience the last time around and I won’t stand for it again, and if they’re going to change the game so that it’s so drastically different than the game I purchased then I’m fairly certain I won’t have much trouble getting a refund. It’s what happened to Bungie with Destiny at least.