Greg hates the older songs, and thats why you dont hear much from the self titled. I think the Ignition shows were some sort of compromise Dexter made with Greg (speculating).
CO1 is a flop compared to other albums. Nobody even wants to hear WYB (which btw, has been played at every show I've gone to since 2003, except maybe the CBGBs show). Same with CGMHAY.

Ixnay though, is inbetween the two most successful albums. And for what I perceive to be their largest fan base's favorite.

I read a review of a show once, where the guy complained they didn't play Change The World because "its obviously one of their coolest songs".