I like resharper, but use it almost for unity development. It would be very nice to have "unityengine mode" toggle in resharper settings. C# 5, C#6 and some some other features are not supported and should be turned off. LINQ have troubles on iOS and could be marked with Warning. MonoBehaviour functions should not be marked as "unused" and so on.
Unity is very popular engine so I think it will be nice for a lot of people