Even though the 48" height restriction will open up MF to alot of younger kids, (and kids this height are young), I personally think that the parents will be a deciding factor on whether or not their child will ride. Even though they are tall enough, are they mentally ready. Sure it is fun, and I would love to ride all coasters with my child, but I would not put my 6 year old daughter on something I thought might be too intense for her, even if she meets the height restriction. Age has alot to do with it.