Yeah, I was saying that if Raptorans got their full flight at level 1, or Dragonborn did the same (or got their full breath weapon or whatever), it'd be too powerful, but spreading it out over levels allows those abilities to be relevant at higher levels without being broken at lower levels.
I completely agree with the LA thing. LA is only fair for abilities that remain equally relevant at all levels, or otherwise scale. Ability score modifiers, for instance, have a pseudo-scaling feature because they stack with the ones you get normally. On the other hand, being of a weird type gets less useful as spells that affect creatures of any type start dropping out of the game as you gain levels. Similarly, most of a creature's specific abilities are only useful at a given point in the game, or use fixed numbers such that they're only viable at that point.