Looks like it was gonna have some sort of spiritual successor!
Posted on the old CVG site: http://archive.is/hLm7
We Are The Mods was originally created for PS2 at Rockstar's Toronto studio, but became a next-gen development at the behest of Rockstar New York. Work began on the game in 2006.
According to Matt Kazan, former environment artist at Rockstar, We Are The Mods was an "unofficial" name for the game. Have a look at some of his early artwork here.
Kazan wrote on his own portfolio site: "The project had begun as a PlayStation 2 spiritual follow-up to the earlier hit 'The Warriors', but part way through the development cycle Rockstar New York asked us to switch Mods from a Sixth Generation to a Seventh Generation development, changing from the PlayStation 2 to the Xbox 360 as the primary development platform. Much of the content here reflects that change, with Mods being the first Seventh Generation project the team had worked on. It was a learning experience for everyone involved. The game was similar in design and style to "The Warriors" but set in 1960's England at the height of the "Mods" vs. "Rockers" era."
A bit off-topic, but that game that never got made reminds me of a certain cartoon
with a "60's Mod" theme that was never made into a series, only a pilot that was released 10 years ago, which ended on a cliffhanger. A damn shame that we live in a world where "We Are the Mods" was never released and "The Modifyers" never became a full-fledged series (it only had a pilot, which spawned a porn parody by ZONE, and that's it). Seriously, what do people got against the Mods?
But I digress. I'm a bit dissapointed that the 60's Mod game similar to the Warriors never got made, I would've loved to play it.