MCV interacting with the warm front is easily better than just relying on the cold front. Guidance that has the MCV focused threat (Which is just about all guidance), does have a more back low level flow, in addition to a much stronger flow aloft (850/700/500). Soundings on guidance that have the MCV focused threat also look much better than those that do not.
Additionally, the threat post MCV threat would still be quality, given you'd likely be dealing with a cold front and OFB intersection across E IA into N IL later.