The #24 defense seems optimistic to me. We were #46 last year, and we lost our best defensive player in Leaky. Nance to Ingram is probably a bit of an upgrade, and Love to Cadeau is hard to tell (most freshman aren't good defenders though, especially smaller guards). Overall it seems worse if anything. I suppose there could be some regression to the mean if last year was just a bit fluky bad.
My defensive skepticism leads to hope that the offense can be really freakin' good, as I think it'll need to be for us to be a top team. That basically translates into Cadeau fully living up to the hype. If he can be a good lead guard I think our offense will hum, as Ryan is at minimum a much better shooter than Leaky, we drop Love's shot selection issues, and there's more offensive depth with Ingram/Withers/ Wojcik instead of just Nance. There's also potential for further improvements from Bacot and Davis, or a leap from one of the sophomores.