It makes a lot of sense for Warmoth to offer the new compound radius options. Typically people want to emulate particular guitars from major brands they are familiar or already have in their collection. If the customers can match the specs exactly with other guitars, it takes away some of the uncertainty from ordering guitar parts online. There are also people who have objections to the 10-16" radius and it is kind of a bad feeling to be charged an extra fee for a fingerboard with a straight radius that would a baseline option with any other company. The 9.5-14" option will appeal to people who believe that curved finger boards are easier for chording on. Although I never understood that, Fender must know what they are doing. Anyway 9.5-14" is becoming a standard feature on Fender USA necks, so that's likely to appeal to a lot of people.
In my case I know and understand that 10-16" compound radius is the ultimate to avoid fretting-out on bends. However I simply prefer the fretboard to have a uniform shape from one end to the other to make it feel more uniform to my fingers, especially with 25.5" scale length. With 24.75" scale necks the strings tend to feel floppy, so the compound radius is helpful to avoid fret buzz, while the playability isn't really a factor. For Fender style guitars, I'm keen to try the flatter 12"-16" because I'm optimistic it could have some advantage to the straight 12" I've been using. Hopefully I won't notice much difference in the feel apart from it being a tiny bit flatter.
