I'l fine with sonic boom being a kids show. Sonic always had Kids's show. No , the thing that I Might not like is the possible lack of personallity the characters might possibly suffer from..... please , make this not happen....
Well, kids' shows tend to be pretty spunky nowadays, and I heard some of the staff of MLP:FiM (which is, apparently, praised for its maturity) are working on Sonic Boom. So I don't think you have too much to worry about on that front.