Really, the most traditional part of the games they make/publish is the graphics. Although they all stay true to the classic "style"(in that they feel like P&C games made in the early nineties), most if not all of them try something new or innovative.
Primordia is fantastic by the way, the best non-in-house game wadjeteye published (Blackwell series is as a whole is better, though the very first game in that series is slightly dated - though still great). Resonance loses its way a bit at the end, but the ride is a hell of a lot of fun.