Right.
Moving further away won't be much support for getting more time with the kids. If dad already lived far away and was moving closer, sure, but if anything, it's probably going to result in less time, not more.
But rather than assuming anything about dad's intentions, you really need to just sit down and talk with him about what he thinks are appropriate care arrangements if he does move. Ask him if he would like to attend mediation to discuss it. He may actually be seeking an agreement about less time, but wants to make sure it'll be on weekends when he's not working or whatever.
Don't presume anything about dad's intentions. As far you're aware, dad's only intention is to discuss current orders.