Originally Posted by
DaveSSS
There is no magic to getting range. If you want more range, you either have to increase the percentage difference between the rings or make some bigger jumps between some of the larger cogs.
This. At a certain point, one-tooth jumps are too small to be meaningful, so going to two teeth just makes sense. Going to three- (or more) tooth jumps way up the cassette are not much different than single jumps down low.
An 11-34, 12-34, or 12-36 12-speed makes more sense to me--lots of range, small enough jumps, and no need to change the cranks and FD.