Hands "movement" demo:
Because I keep my connection, and have set and maintained Keystone, my hands go where they go. At impact they will be where they are supposed to be.
Allen: "I've been trying to move my hands more horizontally out towards the ball in the DS"
!! Danger Danger !! Will Robinson !!

Mixing thoughts !! Danger !!
Awhile back you posted about your shoulders action compared to Bubba's Watson's. Now you are talking about moving your hands....
This is how I see it. You want to make your connection at set-up...measuring to the ball. You turn keeping this connection and set keystone and continue to turn. When you've turned most all you can, you complete this with a strong pull/curl of the trail arm bicep. If you keep your lead arm tricep on the pec as it was at address your backswing will be very abbreviated. If you let the lead arm slide across the chest it will give you more of the "hands high" traditional. But, if you let it slide across in the backswing, then it must slide forward in the downswing. I have never had much success with the slide. True, I don't look as CD would say - "Very Golferly"...but I just think that us average Joes do better keeping our arms closer to where they need to be for the impact position. That means starting them there and keeping them there...for the most part. Don't let that trail elbow stray to far at all from the lead elbow.
My hands move thanks to the action of my shoulders. I don't want to get into the practice of thinking about moving my hands (or arms) toward anything.