I'll be honest, kid Buu wasnt my first pick for Buu either to begin with, but the more I think about it, the more I realise that apart from fat buu (would be a waste of a figuart, no articulation), kid buu is the only forn we actually have another figure to fight with (ss3 Goku) which makes him the most logical choice unless Vegito, Gotenks or mystic Gohan get released first.
Kid Buu wouldnt be so bad would it? Hes about the same size as teen Gohan, so its not like he'd be tiny, plus, when you factor in Gotenks and Gohan Buus head tail, it would be quite difficult to get extra heads, unless they split the head into sections, ruining the effect or seamlessness.