I think the question of "did it see combat" regarding the F8F is missing the point.
The F8F would be useless for scenarios. That much is obvious. Since scenarios are the only part of AH which re-creates WW2, they're also the only part of AH where an aircraft's combat record matters. Were the F8F added to AH it obviously wouldn't be for scenarios, so its combat record (or lack thereof) is irrevelant.
What matters more is how the F8F would impact the one place it WOULD be used--the MA. And in this case, I question its usefulness as it would HAVE to be perked but a perk fighter with only 4 .50's wouldn't likely see much airtime. Heck, the F4U-4 with 6 .50's is hardly used and it's also faster than the F8F.
I've got nothing against adding the Bearcat to AH; but I don't really care to see it either. IMO it'd be an interesting plane without a role (much like the TA 152). I feel there are better choices to add right now, both for the MA and for scenarios. The P-40 would definately be a great addition!
J_A_B