Thought I'd throw in my opinion on the matter. After reading this thread I think that I agree with the folks who believe that Wikidata items should be able to specify a Wikipedia article that is a redirect as a sitelink to Wikipedia.
Its by no means an ideal solution, but I can't see any problems that it causes and I do see problems that it fixes. If there are problems /for Wikidata/ that allowing Wikidata items to link to Wikipedia redirects causes, I would be happy to hear them. I imagine someone likely tried to point some out, but I just didn't quite grasp them.
Thank you, Derric Atzrott