Need Redefined SPA or New Class!!
I agree, though I find it amusing that all but 3 of the airplanes on your list were designed for 'turnaround' pattern (Bootlegger, Illusion and EU1-A). The EU1-A always needed more power than was available at the time anyway.
Maybe just a post-1975 design class for .60 sized airplanes. The Arrow is my personal favorite and one of the fastest pattern ships I ever flew.
Pattern Rules!!
-Will B.