That's what we are going to need to be in the running for top draft slots but with Gortat it won't be bad enough, thats why I've been harping on the need to get rid of him. That's even more important with Frye coming back, who's a notch above Markieff on the offensive end. Maybe Channing will be more tentative than ever and rusty but its possible the year off did him good. If that's the case and Gortat is here, we have one PF/C combo that's just a little below average. The good news is that the running game is not Channing's cup of tea so he may only get 20 mpg (and he's not better than Markieff on defense.)
I don't expect the Suns to be a good defensive team top to bottom but we may have some line ups that are good. I can't imagine the Morrises or Frye holding up their end even when they try but some pair out of Len, Plumlee and Kravtsov might combine with Bledsoe, Dragic and Tucker to make a good defensive unit and a strong rebounding group as well. They're so inexperienced I'd expected to see plenty of lapses, too.
Another reason I expect the Suns to be uneven defensively is that the running game requires lots of players. On top of that Hornacek is bound to do a good bit of experimentation with lineups. Some of them are almost certain to be poor defensively, especially if they're required to pressure the ball - you can get creamed by screens doing that.
Yet another factor is gambling for steals. I think the Suns are going to poor enough offensively in the half court to make a certain amount of gambling worth while. But I don't know what Hornacek thinks about that - he might believe its such a bad practice that he doesn't want the players to get used to that style of play. Of he might think, like I do, that the players should learn from doing when its likely to pay off - with help from the coaches, teammates and game film. Steals are neutral statistically across the league - meaning number of steals does not correlate positively with number of wins (over eight years it had a slight negative correlation in the NBA.) But that doesn't mean that you can't learn a good gamble from a bad one.