Here's the thing with the Henson or Jones scenario. Right now Jones looks expendable on the Houston team. With the acquisition of Smith, he's just not getting any minutes. So acquiring him seems possible. Not so with Henson. With the probably exit of Sanders, Henson has become a valuable part of the Bucks team. So to my mind, Jones is a real possibility, and Henson is just a dream.
Only counter point being the Kings have actually talked to the Bucks recently (if you can believe reports) with Stauskas being the player discussed. No talks between Houston that we know of.
But I agree with your premise. Jones should be the easier get.