Another eberron race that got reprinted in the MM3. Shouldn't take too long to evaluate.
Shifters are imo a solid mid-tier race, given their reasonable stat boosts (a net -2, but many characters can do without the penalized stats), neat skill bonuses, racial support and neat shifting abilities. The latter is varied and honestly a neat break from D&D's tendency to have PC races give nothing but passive boosts, but not a game-breaker.
Are shifters on the same level as humans? No, but they aren't as bad as goblins either. All in all, a pretty obvious +0 LA.