Booger
You have BLASPHEMED!
Seriously... You're right that the TSR2 was very early in development when it was chopped. It's probably fair to guess that the avionics would have given at least as much trouble as they did on the F-111, which didn't really work properly until they got to the F-111E, but the UK would never have had the luxury of building lots of As and Ds.
Otherwise - from an aeropropulsion viewpoint the TSR2 was a way to meet an F-111-like requirement without swing wings or augmented turbofans. The result was a bigger aircraft, but I had never thought of it as a bad design. It had its flaws but so did the F-111. (You see a lot of airplanes around with dual exhaust ejectors and quarter-cone underwing inlets, don't you?) The wing was not optimized for high altitude but the idea was that there was enough dry thrust (the weak point of the Tonka) to push the airplane along and enough fuel to keep the engines running.