not entirely sure what you mean. i do remember reading a character or two that did seem to have what it sounds like already. initial reaction to what you mean is Kurama-esqued intelligence during combat, though the furthest extreme i could think of is Amadeus Cho in Marvel. but that's well beyond even the high end.
realistically, it's still the same kind of thing as any other character - that's a power. in Cho's case, his weakness is a pretty simple one: he's still completely and utterly human. in Kurama's case it's a matter of shounen power levels as he could still be injured if you were on par or if you managed to trick him/distract him somehow. you can also equate this to guys like Iron Man too at times. or you have stuff like Saber where her skill gives her quasi-precog-that-isn't-precog, yet she still would've lost to Lancer without interference due to his ability to predict actions in the future via raw skill and speed. in all cases, it's a power, so really it depends how well they'd fit. biggest things that come to mind are the basic questions; how does it work, what can it do/has it done, etc.
Cho is close to it, actually - the stuff I'm talking about is basically mixing his talents with super fast information processing and detectivesque inferences to elaborate models of reality, then rapidly readjust those models based on new information. Think of it kind of like how a supercomputer maps out chess moves many many turns in advance, but make it human and applied to reality.
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Twostuck, Homestuck RPG: http://www.gamefaqs.com/boards/8-gamefaqs-contests/62168402