One feature that Chrome is likely famous for is its 'Tab to Search' function, i.e. allowing the user to search arbitrary websites from the address bar, without requiring the user to manually add the website as a search as seems to be the current behavior in Firefox.
Mozilla Support has seen requests to a similar extent before:
Fortunately, the Chromium project has a page detailing the workings of this feature.
For what it's worth, its code implementation of these heuristics may be found here.
Would it be possible to implement similar functionality for Firefox as well?