Please add numeric-conversion capability to the search mechanism. Tons of games have sequels that are either written as VII or 7. Case in point: I posted this because I didn't see this when I was typing the question and leafing through the related questions. Can patterns that match roman numerals be translated to numerals and added to the search? It might be a little rarer, but numbers could be translated as well and added to the search, so that FF7 matches posts for FFVII.
The point was made that some Megaman games are numbered 1, 2, 3 and some are numbered I, II, III. (reference)
And what happens if/when we get a medical SE and somebody performs a search for IV (intravenous) catheters? They'll get a bunch of unrelated questions that happen to have a '4' in their bodies.