I think that having a mk7 section is a good idea as that is what existing mk5 owners are most likely to move up to, and as Rich says it is a rather different build to mk5/6. Arguably, the Clubsport S represents peak GTi.
Having seen what an ugly and underwhelming design VW have eventually announced for the mk8, it seems a generation to miss rather like the mk3...in my opinion they appear to be transitioning the design over to purely electric future models.