What about the old philosophy of keeping what works and improving what doesn't? Should be applicable to golf design as well.
We have no 99% certain way to know what the design intent is, but we can probably reach a consensus on features that work or not today (whether strategically or technically, i.e., drainage. Using this approach, it would seem most of us, since we aren't redesigning all the greens in "our style" would try to make whatever changes we recommend blend into the greens (or really, green complexes) that aren't being changed substantially. Thus, in the end, the goal is a sympathetic renovation/restoration.
It should be the best of both worlds.....but I grant sometimes it is also the worst of both worlds, LOL.