I think people are overlooking the role that scarcity played in Mark Smith's recruitment. There just aren't that many guys as good as him that are still uncommitted.
Using the Scout top 100, there are 7 guys, including Smith, that are uncommitted.
Do I think that Mark Smith is a bit underrated? Maybe, but my uneducated opinion puts him around the 50-60 range at the highest (not to say he can't outperform many players ahead of him in college as we know the rankings aren't perfect). Will I be pumped if (when? ray he commits to the Illini? You bet. However, if it were a typical recruitment of a top-60 type guy leading up to signing day in November, I doubt Kentucky and Duke would have gotten very involved. Not to say that beating MSU wouldn't be great, but UK and Duke's involvement, IMO, has as much to do with the lack of great options left at this point in the game as it does Mark's impressive talent.
Smith is a complete outlier. Unless you are talking about a kid that plays overseas and very few have seen him. With the business college basketball has become you just don't see kids that were completely off the radar, with no camps, no AAU and basketball as their 2nd sport, all of a sudden explode and become Mr. Basketball of a State with the talent of Illinois. Underrated isn't really the right word, it is more like unknown until recently. However, if you think a 6'5" natural PG with Smith's strength, athleticism, court awareness, basketball IQ, scoring ability, touch and vision is only the 50-60th best high school player in the nation then I need to start watching high school basketball wherever you do