Ravager – Ravager replaces Bladestorm and does about an Execute amount of damage less than Bladestorm. That may seem like a lot. However, one thing people forget is while Ravager is active you get to use other spells at the same time. Where as with Bladestorm all you can do is Bladestorm. So, while Ravager is active you can turn on Sweeping Strikes and use a Colossus Smash, Mortal Strike, and Execute by the time your Bladestorm would have ended. In the end, you will do thousands of damage more.
Potions serve more utilitarian purposes, and it's up to you to decide whether to make use of them. The most common is the Swiftness Potion, which can provide you a handy boost in speed while going after annoying quest objectives indoors. These are generally MASSIVELY overpriced, because people know how useful they are. I opted not to spend the gold since Warriors are already fairly mobile, but slower classes may benefit greatly from these.
But when it comes time to level another character for any reason, this pace is going to make me think twice. And that's a shame. I'm not someone who gets any particular joy out of instant-boosting a character to max level. There are dozens of zones -- no exaggeration -- that I wouldn't mind experiencing again, if I could do a few of them at a time and feel like I was making meaningful progress on another level-110 in the process.