>>11803879 (OP)Yes. While the GC seemed to miss out on a final round of major releases to see it off after 2005 it had wound down well before that point. Basically every multiplat from 06 reveals that the cube ran out of steam, PS2 was still firing off effects like soft light bloom and more convincing motion blur. Missing effects and even worse framerates were becoming the norm. Wii shared some of the same games like NFS Carbon and it makes the Cube version look like a bad joke. The best looking Wii games do surpass the best looking Cube games, but they don't look too far ahead - indicating the extra performance grunt and additional effects weren't too far beyond what the GC was achieving.
For this reason I believe GC hit its limits. It didn't have any more room to stretch.