I am building some real enthusiasm for this idea now. I think it is certainly achievable with a target age down towards the 10yrs old mark or even lower. Hero Kids goes down as far as 4yrs old and I just don’t think that is viable for any sort of Rolemaster-esque game. Just think of the sorts of sums we do adding open ended rolls, adding OBs, adding and subtracting positional modifiers, adding a negative DB and applying percentage based penalties from criticals or faster actions. That is beyond any reasonable expectation for someone below the age of 10 unless they were unusually gifted.