I am with you, but I thought that I should highlight an issue: With WCF the client interacts with proxies, thus, all the features implemented to interact with a UI are needed on the proxy entity, not the server-side entity.
I am looking forward to ES 2008 (based on the semi-roadmap blog), specifically, the layered templates where users can tweak the proxies versus the server-side entities more appropriately. I have radically modified the ES templates to align with an n-tier WCF application that is inline with my existing framework. It is not so bad to deal withnow, but each upgrade does make me nervous that some breaking change will be introduced.
Again, the layered template approach should really make a huge difference - I am drooling in anticipation. Assuming the layered templates approach gets implemented, I would be eager to share WCF related templates.