Did a quick photomanip of a Ju 88A trimotor today, to my knowledge there was no proposed configuration of the sort, I think the Germans *mostly* left the trimotor schtick to the Italians.
By cutting so much of the extensive glasshouse in the front, it would likely lose a significant amount of forward visibility/defense/space for the bomb sights. Aesthetics-wise the side view looks a bit wonky, if only because the Jumo piston engine and its radiator are so long.
Also more weight dedicated to an extra engine, new firewall, pumps and whatnot, while keeping the same fuel capacity would hinder significantly its range at the price of a modest increase in cruise speed, perhaps? And to top that the need to reposition the wing to better fit the shift of its CofG forward. A possible purpose that came to my mind would be some sort of dedicated high speed torpedo bomber, skimming just above the waterline and striking fear in the Allied warships and convoys...
For a closer visual familiarity to something like the SM.79, perhaps the Ju 88R with its BMW 801 radials would be a closer candidate.
In any case, I only have one Ju 88 in the stash and it's destined to another fate, so I'll gladly throw forth this monstrosity to contribute to our collective imagination.
