This is a RELATIVELY new trend that I hate...big-screen adaptations of cartoon movies featuring the cartoonier characters as cgi and the rest live action...
i don't mind if for the chipmunks because i honestly don't see how else it would work but you couldn't get a scooby-looking dog for scooby doo? and you couldn't get a garfield-looking cat for garfield? or on the flip-side, why not just go full CGI?
not to mention, i hate the idea of doing big-screen versions of these old cartoons anyway...