Thanks all for weighing in!
Godzilla really stood out to me as a title where the shaker was a really cool upgrade.
I would be interested to see figures (doubt they are out there) about maintenance/repairs on a long term scale in tables with vs without a shaker. Heavy vibrations over time can certainly loosen things in almost any machine. I do HVAC and commercial refrigeration, part of tune up/service plans is tightening all screws, bolts and especially electrical connections. Even when I clean and wax my tables I go through and tighten down whatever posts and other odds and ends I have easy access to, I usually find a few every time, and not always the same one.
That being said, so far I am leaning towards adding one.