For fretting hand reasons, I’ve mostly worn the guitar pretty high in recent years. My main picking technique tends to be forearm-wrist blend USX, though I’ve been dabbling with wrist-based DSX.
With the guitar high, most of my experiments have involved resting the heel of my hand on or near the bridge in an Andy Wood type of setup.
But I decided to experiment with a setup where the heel of my hand rests more on the body of the guitar, and dabbled with picking further from the bridge. I’ve found that to get a setup I like with that, I needed to hang the guitar lower, to give myself a “steeper” approach angle (picking arm pointed more toward the floor, i.e. less parallel to the strings).
One thing I’m finding with this is that a meaty contact between the heel of the hand and the guitar body makes elbow DSX feel a lot more comfortable than I’ve found it with other setups.
It’s not a huge deal, but it’s a variable I hadn’t thought about a lot in terms of the picking hand previously, and maybe others have neglected it as well. I suppose in particular if there are any folks with a solid USX who want to add a DSX motion to their toolbox and haven’t found a setup they like, this is certainly something worth experimenting with. I haven’t noticed any negative effect on my USX with the “lower guitar” setup (and some elite USXers like Nuno Bettencourt hang the guitar very low). Main acclimation issue for me is the fretting hand.