Thank your great feedback!
When you have F# projects in the solution you need to have assembly references to them instead of project references. That way we could use our metadata reader to resolve the type information from the assemblies, like you properly suggested.
What we could definitely improve in the short term is to configure references to F# projects as assembly references in our code analysis process.
In the long term we will consider adding F# support as well. F# has similar services as Roslyn and the implementation cost is significantly lower than before. Unfortunately the user demand for F# is still not that big.
If you have other suggestions, please don't hesitate to write back!
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Feedback Portal
and vote to affect the priority of the items