General consensus on Geass remains:
It's so bad that it's entertaining to watch.
It's not bad because it's shoddily produced, but it is bad because it's insipid, messily written, and punctuated by incredible moments of gratuitity so OUT THERE (in S1) that they hit you like a truck. "Wait...WHAT is she doing to that table?!" It's the worst of a Sunrise robot anime combined with the worst of Death Note, with an adorably stupid little school anime attached. It is a perfect storm of bad anime written by committee.