From the sound of your rotation, your threat should be fine. Your AoE rotation will generally be Swipe, Thrash, Swipe, Mange, repeat. Since you don't have thrash yet, then you can tab lacerate instead. Given you are getting hit hard enough, you should be able to spam maul on cool down. This puts your buttons at four, given you didn't macro in maul. If you also include lacerate and pulverize from single target, then that puts you at six buttons total in your rotation. This is excluding any cool downs that you have, which would add three more buttons to your rotation. I have only warrior and druid at 85 atm with both DK and paladin being leveled, but I find that bear is the easiest for me personally. The buttons are probably the least of all of the tanks with the exception of maybe paladins.