When I do:
<tag:control Property='<%# Container.DataItem %>' runat="server" />
Resharper tries to <%@ Import soemthing (I forget what, it's @ home, it's like System.ComponentModel.SOMETHING). Even though Container.DataItem is valid as-is.
I find the intellisense engine in 210 much worse than 209. I'll try to point out more specifics.
My alt-enter still doesn't work.