I have also recently ordered and viewed the Steve Kossacks DVDs. I watched the Yosemite DVD first and was also disappointed with it, Steve's presentation was pretty disappointing, I found him quite unconvincing when he was trying to provide background to the shoots/area. I then, reluctantly, watched the Death Valley DVD but, I thought it was superb, Steve also redeemed himself to me as the front man for the DVD, he was much more convincing with his his lines and I actually believed that the guy knew what he was talking about when he was giving some historical/geological backgrounds.
In saying all the above, I had to keep reminding myself that Steve is not an actor but, a photographer so, I cut him some slack. I am still dithering over whether to order his new DVD, although, I probably will.