From going over on-line comments I'd estimate at least 30% (if not 50%) enthusiasts and/or potential buyers who don't like the falcon wing concept but do like everything else about the model.
At some threshold surely it makes more sense to keep both models, doesn't it?
Also, from a general perception / psychological point of view wouldn't it be better to at least compensate for the 10% drop in range even if it means a higher price tag?
Going for a lower range from one model to the next, for any reason seems a bit like going backwards.
As an observation, I think this could be a potentially very important issue, both for the number of cars sold and the market cap. People are not just buying a car. They are investing in an idea...