I don't care what you all say...I love seeing big rigs at rock shows, and I don't care if they're real or perfectly arrayed and time-aligned or not. I don't even care if they're dummy cabs. However, those fake amp panels look really cheesy and obvious.
I like the stacks too. One time I saw ZZ Top, they were doing the wireless IEM thing. The whole stage set was some jungle/tiki hut motif thing, not an amp to be found. The tour before that just plain looked cooler with the wall of speakers, even if they weren't being played.
Mike seems to be doing fine for himself with Chickenfoot and is probably better off anyways.