When searching with a query wrapped in quotes for an exact match, what if our search return the results as expected, but then also presented users with a prompt (like "Did you mean?") that would allow them to re-run the query without quotes?
Maybe we could do it if there's less than a certain number of a results in the first search, but I could see it being useful all the time, regardless of the number of results presented.
Tracking searches where the searcher used the "Did you mean" like prompt might be interesting. I don't know about useful, but interesting. :)