I too was wondering about the Zeagle back plate. After shopping around however, I think the best rig for me maybe the DSS rig with the 17 lb. lift tropical wing and some of the Zeagle shoulder pads (some of the dive here have a bit of a longer approach). To my knowledge, not many companies make wings that are that small.
I agree, the octo-inflator is a solution to a non existent problem. People are so obsessed with getting rid of hoses while they still use floppy vest BCDs...just cracks me up. Octo-inflators add another challenge with regards to controlling your buoyancy when you're already in a somewhat stressed situation. I guess I'm just really curious as to what other reasons people have for wanting one of these devices. I must admit, in the very beginning I thought it was a neat idea, but now it just seems like bling to me.
I'm still new to this... but that's just my 2 psi.