Buddikaman,
Robot design is superb and really shows what you were talking about integrating models into maps fully rather than just laying them on top of brushwork.
That being said, the green eyes don't seem to fit the tf2 color palette. Of course straying from it is an option, but might I suggest the same shade of yellow that an ubered player's eyes glow?
Your work is excellent though, meridian's one of the most exciting things for me in mapping at the moment. Keep on truckin fellahs