Yeah, I waved he LA for Tieflings back in my 3.5 games. I don't think WotC had the knack for LA quite right then they first printed them back in FRCS.I always remember thinking the 3.5 Tiefling wasn't worth the LA. -2 charisma, a spell like ability that will hurt you as much as your enemies. I don't know, maybe the random elemental resistances justify it.
Yeah, it sounds about right if you balanced them against the basic Pathfinder races. From what I recall, Pathfinder updated all of the weakest LA +1 races, in their Advanced Races Guide, and none of them have an LA anymore.I have been thinking about what are the weakest LA+1 races and could you drop the +1 LA if the other races were buffed slightly or if you used for example Pathfinder Races in 3.5. The Genasi for ewxample seem weak.