I still don't see what the big deal is about receiving something from the game on your birthday. The birthday option is only for the Shinobi Legends Forum, it has nothing to do with the game. In order for you guys to get birthday buffs or whatever, an exclusive code is going to have to be written and tested for that to happen. On top of that it will have to be incorporated in not only when someone creates a new character, but also it will some how have to implemented to everyone that has already created accounts. That is truly troublesome, just because a few people want a birthday buff that is going to do absolutely nothing but feed into one's fragile mindset.
With so many events, new ideas (Collectible plushies, Missing nin, Akatsuki ideas), including the finishing of the kekkei genkai code that everybody wants done, is the birthday give-a-way really of much importance?