I don't know why some delusional people are saying to try it. Unlike some people stuck on their mother's teet, some of us have played other games with this exact ability and are well versed in how it works. On top of that, some of us can read. This ability gives you 20 seconds of sprinting @ max tp. There is no need for anyone to "experience" it in order to give feedback about its implementation.

Additional negatives I see: in town, you will constantly see people sprinting across your screen so fast you'll swear you were playing Sonic The Hedgehog, complete with blue supersaiyan glow. I would think the anti-bunnyhoppers would have something to say about that. For me, it's not that it's "immersionless" (which it is) that is so bad, but it's knowing that this feature is just so redundant. I mean, in an MMO walking around is a huge time waster. You'll have no choice but to use Sprint to dart back and forth everywhere. If you stand still in a city and look around and see people Sprinting all over the place it's going to look like the Jetsons. I think it would just be a lot more saner and less complicated if you could simply equip earned speed boosts to some kind of slot system, so everyone can just move at a consistent speed without all the chaos.

Battle flee, which is really the only thing left on the table after a passive speed boost, should just be made into a feature of the battle system as it's always been there in nearly every FF.