Depends on what "too much work" means as well as what your skills and standards are. I think it is eminently doable! I am rather surprised no one here has tackled it yet. Such a project has been discussed here many times. It may be no one has taken it on because at one time Ron Kootje was promising a conversion kit. After he joined forces with Aviattic, the project "went dark." Perhaps it is still in the pipeline?
The Johannistal D.III (with the square tail) is probably the starting point. Excellent reference exists in the form of Koloman Mayerhofer's meticulous reproduction, documented in great detail on the aerodrome forum.
The hardest bit is arguably the Austro Daimler motor which AFAIK is not kitted yet in 1/32, so you would need to scratch that. The schwarzlose MGs can be scrounged from one of the WNW eindeckers (can't rem off the top of my which one -- D.III early? -- the one with the A-H marking version). The nose & cowling panels would have to be scratched, too -- vac form or plunge molding from a balsa carved form being the techniques I suspect most builders would gravitate towards.
Then there is the radiator, fuel tank, etc etc...
