Really think about the price, and compare it to our current setups . . .
Original model - Vision model
Retail: $750. - $1200
Reliable Tx. $350+. - Included
Camera, Gopro3 ~ $300 - Included
Gimbal (1-Axis). $50 - Included
FPV Tx/Rx. $100 - Included
OSD. $100 - Included
Upgrade mods. $150 - Included
Total: $1800+ - $1200
Upgrade mods would be bigger, balanced, self tightening props, a "second" 2200mah battery to make the 4400mah of the vision. "Upgrade"(???) shell.
I don't claim the vision camera will be comparable to the gopro, but that's just the comparison we are using in the real world.
I feel I've been modest on the pricing of mods spent on the original, look at you current set up, and total the cost, including the gopro and all the other little bits and pieces you've bought, and think if $1200 is really I high price for a RTF model of the same ability.