As a Visual Effects Supervisor my only beef with any CGI content in any action film is the dynamics of the shot.
In Aviator there were some technically superb shots spoilt by the fact that the shots were impossible to achieve any other way than CGI. The 'bums on seats' public may not know why a shot looks phony but with the expense involved in creating CGI material, each one should be at least believable.
Good luck with the project and make every shot count!