Short version - if I don't have a character idea for it, I won't play the build.
That said, I like testing builds that are outside the "main sequence" to see what they can really do. Unfortunately, game devs seem to have a habit of forcing people back to the main sequence, either by granting OP capstones to "pure" builds, or by nerfing anything that strays off the beaten path. Hoping that doesn't happen here.