Custom Dictionaries at Solution and Project level
A lot of programming jargon is missing in the default dictionary, and in many projects there are several unique names -- also missing. Therefore it would be very helpful if it was possible to maintain custom dictionaries not only at user level, but also at solution and project level, making it easy to include those in source control.
Much like the ReSharper settings themselves are handled.
Edit: I, personally, have no interest in this anymore.