your proposed aero change would make fey light on the scholar, useless
i think esuna should be instant cast and taken off the global cooldown, i agree with your change to freecure, it should work on all 'cure' spells
their mp regen should also be looked at
that's not true...
holy, benediction, repose, battle rez, and high potency aoe heals
scholar definitely has more utility but it lacks in high healing numbers, whereas whm has high healing numbers but lacks in utility
yoshi-p already said scholar and white mage will work best together; i can already see scholars reducing potential damage taken, and white mages healing targets back to full
pets also get damaged by aoe (some people have claimed it's reduced, but during ifrit my emerald carbuncle still took a lot of damage) and the scholar will have to position their fairy constantly, it's like controlling two characters at once
i'm not going to say you're worried for no reason, but i do think you're greatly underestimating a skilled white mage's capabilities
i still think benediction is better than lustrate because it's the full amount of health, considering some warriors are talking about putting all 30 points in strength to benefit their self healing... lustrate to me is just an on demand heal for scholar, since 20% isn't too crazy of an amount (yes it can be used three times in succession, but i don't think a smart scholar would want to want three stacks of aetherflow for that, when they could use sacred soil instead)
there probably will only be rare moments in an encounters where a hard boss will use a very hard hitting attack that brings the tank down to ~10% health, and that's where i believe benediction will shine
as for fairies... who knows how they'll work yet? the support fairy may not be able to do anything during the duration of fey glow who knows
when i get to 50 and have tested a bit with scholar, then we can decide if it has too much and white mage has too little (trust me if it's truly overpowered i'll be the first one calling for nerfs)