I have received word from EA Sports that offline co-op (2 vs 2) is going to be included in Madden 08. Having this settled should ease the concern that it would not be in again this year.
There is no form of co-op in NCAA Football 08 and that disappointed some people who look forward to the chance to play alongside a friend on the same team. Although it doesn't seem to be an overwhelmingly demanded feature, it certainly is nice to have it in for those people who enjoy the co-op type experience.