id be pretty ok with it, long as they required level up, or happyness to evolve. might actually want to use a legendary if i had to "earn" that massive power. plus mystchic the prevo of the 3 legendary birds would be adorable!!
dandelion + flabebe + fairy wind = saddest moment in pokemon. 3ds fc. jd, 0602-6823-9646 or 0146.9112.0071
I would love that, simply because then people wouldn't be able to say that legendaries don't evolve.
Also, it might mean we can breed them, which is also amazing. The worst part about legendaries is that you only get one per game, so if you don't get good IVs and a good nature, you're screwed. And then if you want another one with a different nature, good luck with that.
THAT'S MISS FUNERAL CAKE TO YOU love me like it's prom night