Please tell me what a modern Harrier would look like. Here is an (admittedly contrived) list of some design goals: * Greater STOVL performance, without the lim

Please tell me what a modern Harrier would look like. Here is an (admittedly contrived) list of some design goals: * Greater STOVL performance, without the limitations imposed by needing to carry water for thrust augmentation * Low observability (certainly lower than a Harrier, which has a big RCS) * Greater sensor capabilities. Built-in electro-optical targeting so that radar can be used less, or not at all * Reduce pilot workload by filtering information presented in an intelligent way * Reduce STOVL cognitive errors created by differing control schemes between STOVL flight and conventional flight This sounds an awful lot like an F-35B. My point is, saying you want a "modern Harrier" isn't enough. Because in many important ways the F-35B is a "modern Harrier". You have to figure out how whatever it is you're going to build will be different, if you hope to avoid the same problems.