I so want to run this for a group which includes a kid who as well cannot read! Might need some modifications, but we'll see. Love the use of symbols for ease and quickness of understanding ability scores! Also I like Smile as an Ability to resist sadness.
If Oddlings use magic and, say, it might fail and backfire or strain them, which Ability should generally be rolled against? Or would it depend on the magic and overall situation (say, if an Oddling tries to keep themself invisible while going among fairies, the consequence of a fail might be embarrassment at being discovered, so the Ability is Smile; but if they use a magic to shield themself from falling rocks, the consequences might be that they strain themselves mentally to precisely avoid the rocks, so it's against Wit)?