"Morphs break"
Then again, that happens all too often, even if you're not doing anything extreme. The sad example here is the G2 female line. An unmorphed G2 Sydney is more or less okay, but if you try to make her even slightly taller/shorter/skinnier, or if you try to give her a little bit of definition, the results are bad.

I think you're basically right when it comes to more specialized figures for the different body/head types. In my opinion the G2 people represent one end of the spectrum (virtually unchangeable), while V3/V4 represent the other end - an attempt to a "one size fits all" solution.
The best solution would be somewhere in between IMO.
Trouble is, one would still need quite a lot of semi-specialized figures. What parameters do we have? Thin - normal - fat; Caucasian - Asian - African; smooth - normal - muscular; and I'm probably forgetting quite a few parameters. If you use three base types per parameter, and you have N parameters, you'd need 2*3"N different base figures (male and female). That amounts to an awful lot of figures!

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

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