Well you know, there's always Clauncher here that is kinda cool, if you ask me.
Otherwise you can just wait until the full Pokédex comes out and see what Water Pokémon could play that role instead of Squirtle.
Usually I propose people to not go too fast by doing teams with the Pokémon we've got actually. Take your time, be sure to get the good starter and not regretting your choice (and for that, maybe you'll have to wait the release date for that so you can see the evolutions, depending if you judge a starter by its evolution as well) and then just check up the whole new Pokédex to see what are your favorites once they are all there for you.
I used to rush in things in the past, and my first Unova team (right when I bought the game) ended up with a Oshawott, a Lillipup and a Purrloin (that was way underleveled). I restarted after that to get Snivy (see ? I didn't even know wich starter I wanted!) to finally get Oshawott way later.
Wood Hammer is an awesome move that I never had the chance to try out.I'm also going for Chespin and I never changed my starter because I disliked its evolution, so I'm probably going to stick with Chespin.
I just don't want it to have a ... tree coming from its head, like some are speculating. However, just the fact Chespin can learn Wood Hammer made my day, exactly like every Fennekin fan who learned it could learn Psychic.
