If Yamato did decide to release an all new perfect variable 1/60 scale VF-1 toy, I'd like to see it come with the following improvements over the 1/48 VF-1 and the older 1/60 VF-1 toy: -
Rotating cockpit seat ala 1/60 VF-0 toys.
No more removeable nose cone and moving flaps (damn things are a pain in the ass IMO).
Better non-splitting engine detail inside the foot thrusters, like on the 1/60 VF-0.
A better sculpted GU-11 gunpod. I find the one on the 1/48 to be too thin and tapered.
Rear landing gear which can angle out when opened, like on the 1/60 VF-0 & 1/60 YF-19.
The VF-1A Cannon Fodder variation to be released with swapable DYRL and TV style heads.
Better detail on the foot thrusters at the back of the ankle. Even the 1/48 just has these as two painted red circles. The 1/48 GBP actually has these as molded on detail which is great.
Designed from the start so that two-seaters are possible.
A transformation system like the VF-0, with folding panels around the head in fighter mode, to reduce the length of the nose in fighter mode.
A HUD in The TV versions.
Painted missiles, like on the 1/60 VF-0.
More as I think of them
Graham