I see they finally have the specs for the 50 Series on their website:
Branson Tractors - 8050
The only thing I see different from your assessment is that it has a 16 speed synchro shuttle as the tranny, not a 12 speed. Do you really use all 24 you have now? Two of our tractors had 16 speeds, and if we used half of those in the course of our normal farming activities that was a lot.
I didn't even know there was such a thing as "auto back up raise for the 3 point implement", but I can see where that would come in handy from time to time.
I grew up on one speed PTOs so, to me, 2 is plenty (std 540 and 760, or economy 540?).
I don't have any idea what you mean by "touchy clutch", but yes you still have to clutch to change speed or direction. That's the nature of a synchro shuttle.
Personally, I never had the need for a buddy seat.
If I may inquire, what tractor are you running now - using as a baseline comparison?