I don't know I think that's why they put the Troodon in the game with the compsognathus call, that dinosaur is just too tiny oh, this is just my opinion
"Yes," but it's kind of "necessary." The game, especially as part of the Jurassic Park franchise is not complete without Compsognathus. I'm sure slight modifications to the game can be made to accomodate any issues involved.
Plus with my image above based on the actual scientific size of Compsognathus (4 feet not 3 feet or chicken sized) it becomes more plausible.