Schedule Slip: Several titles have fallen victim to this, including Ultimates during vol. 1, New Ultimates, and Ultimate X. Ultimate Wolverine Vs. Hulk takes the cake, with four years passing between issues 2 and 3.
Short-Lived Big Impact: Compared to the original Marvel U's massive output, the Ultimate line is tiny (only ten or so years old, with no more than four regular titles at a time). Yet, nearly every Marvel adaptation since the line's launch owes something to its Ultimate version. Especially the Marvel Cinematic Universe.