Yup. Atlus kicks ass, and has literally never let me down. I'm going to buy the DLC just to support them, even if it's stuff I wouldn't normally care about, like costumes. I'm sure this game will be complete.
Plus, Index is in debt. It's either a slightly pricier game and paid DLC to raise profits (which it absolutely will), or we don't get any more SMT games.
People need to get over this mentality that every piece of DLC ever released is evil and indicative of a sinister incomplete game plot. Not every company is peddling horse armor.