For the majority of shots, I leave the vibrance and saturation alone, concentrating on recovering any blown highlights/shadows where needed. For some evening shots, where the white balance adjustment doesn't get the colours I saw, I occasionally selectively increase the saturation slightly in the highlights. Beyond that, I pretty much just do the lens corrections (but not for all shots) and any CA correction that is still needed. Lately, I have also been adjusting the tone curve in LR instead of PS.