I can in the style of 'what if..?' thinking that it's just as well as Messerschmitt hadn't of got around to using something akin to the Bf 109X/V-21's style of more curved fusalage once for prouduction, with fitting the pipework in shaped internal ducting or semi-recessed within the new fuz.
The cockpit might be a little less wider below the cockpit hood stringers with an internal cockpit side wall skinning to fuz structure (to help protect the cockpit from heat and leaks/damage to the pipework in the fuz), but the wing attachment points could have been spaced a little further apart but I suppose that it would be too similar to the 190 in many ways...
Although it would have in the least, improved the high altitude handling, reducing drag and vortex generated effects by that exposed pipwork on all on oneside. If a radial water cooling was used with a 605 in it too... But techically speaking, things didn't go that way so.
I wonder if there was any Messerchmitt (or other,) experiments data on long span 109 wings/extended-wingtips on/of F/G/K style or basis?
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Cheers for the #5 posting below Anto
Didn't they only extend the wings by inseritng spacing wing sections, basically extending the wingroot attachment of existing F type wings outwards?
If so wouldn't the structural frequency/flex/design-parameters of the flight loaded structure would all be out of whack/tune, and hence no wonder they suffered flutter at high speeds/diving; possibly due to too little or no washout, with possible production impefections on/in the wingtips assuming they were normal Friedrich tips too.