IMO the biggest problem with the Kingdom Hearts franchise is the reuse of all of the same freaking content. Seriously, isn't it a little sad that the biggest feature that every Kingdom Hearts game has to offer aside from Kingdom Hearts I and II is that they actually have (a little) new content? The amount of ports and remakes is beginning to get unbelievable.
With that said, I didn't expect much of anything new from Kingdom Hearts 3DS at all, and sense it has new worlds and supposedly ties in with Kingdom Hearts III (which is a confirmation about Kingdom Hearts III existing that's exciting in itself), I will definitely think about picking it up once it and the Nintendo 3DS releases.