dave, a sequence should satisfy three criteria: it has to be flyable, callable, and judgable. spacing of figures is critcal to meet those criteria. inadequate spacing means the figures are rushed, too much spacing and the pilots spend their time driving up and down the box - which makes aresti2004 angry. i haven't seen the new unlimited sequence, but i do know from years of sequence writing that an average k of 45 per figure is nuts - there's just way too much going on. not every figure in an unlimited sequene has to be a "unlimited" figure, a belly in hammer with a 4/8 on the upline is a pretty decent figure....it doesn't need roll elements hung all over it to be challenging. also, to add to what doug said, the toc sequences were 12- 14 figures per sequence, all were "forced" to a limit of 400k, and rollers "k factors" were increased from the fai k factors. so in reality, and i did calculate the ks on a toc sequence some years ago, they were well below 400, even with the increase in the number of figures. a lot can be said for a sequence that is moderate in difficulty, but can be judged critically.