Should dodging ever be acceptable?

I just received a 12-hour queue timer because I dodged a lobby in which my team went full AP, leaving me to be the sole AD champ into an enemy team comp in which I would have much preferred to play Elise, another AP champ. To me, this kind of blatant imbalance in team comp should qualify as an acceptable reason to dodge a lobby without penalty; after all, the devs understand that a balance between AD and AP is ideal (Phreak has said as much in his patch previews, while discussing itemization changes to things like Abyssal Mask) and that teams that lean too heavily one way or the other are opening themselves to being easily itemized against.