Here's a collection of CG and Stop Motion Character work from a couple of directors who I'd feel comfortable pitching.
Jim Clark is a polymath wiz who is particularly adept at integrating live action with animated characters. See more here: ffake.com/luxury/#/?page=b7
Carl Willat, as the director of the long-running Hershey's Kisses campaigns, is a master of creating feeling out of normally inanimate objects. More here: ffake.com/luxury/#/?page=b0
Gordon Clark is a very funny director who has made a successful career with naturalistic characters in artistic depictions.... see more here: ffake.com/luxury/#/?page=b1