It's okay.
It isn't what I would call an awsome BioShock parody. In fact, it's pretty dull. I really don't see any way to improve this movie. Second, no one can fire the big daddy because Andrew Ryan, Frank Fontaine, Dr. Tenenbaum, the freaky plant scientist lady in Arcadia, Sander Cohen, and his last disciple are the last somewhat sane people left in Rapture. I did like the plasmid add, though.