Haha...
It is quite sad; I feel as though I am on board with his character currently, but what made me change my mind? It wasn't Takamaru unfortunately. It was a combination of other characters that I love. Little Mac, is the predominant reason I changed my mind. I really want to have that East v West feel on the roster. I could so clearly envision Takamaru against Little Mac, who was my most wanted newcomer. So I need his antithesis.
The other reason, Mitsurugi. He has been my Soul Calibur main in every entry; as such, someone reminiscent of him would be really great in Smash, my second favorite fighting game series. My first favorite is Mortal Kombat, I didn't mean to insinuate that Soul Calibur was my favorite, haha.
The last reason? It is actually because of the character. I have been reading comments in this thread that assert certain things he could do as a character. The notion of invisibility is REALLY appealing to me, because, back to my favorite fighting series, Reptile is another prevalent main of mine. So Takamaru has elements from all of these characters that I really enjoy, I may not be a huge fan of Takamaru, but I am a fan of what he would represent to me, personally.