Yeah, Box Step is the most expensive form of defense reduction in the game by a long shot. What they should have done is double the potency of DNC steps (for DNC main at 99) and leave the maximum daze level at 5, and then not change the recast of steps. Then we only have to suffer as much JA delay as we used to, we get the same potency of debuff that we get now, and it's *still* effectively the most expensive form of defense reduction in the game.

To expand that list Malithar made:
* Dia II/III - 10/15% defense reduction, takes about 4 seconds to cast and recover from if you include magic delay and 30/45 MP. So it's 3 MP/defense down and 2.5% defense down/second. It is single target and has a near-instant activation time (<1 sec).
* Angon - 25% defense down, costs about 300 gil and 1-2 seconds JA delay (12.5% defense down/second). It is single target and has an instant activation time.
* Indi-Frailty - 37.5% defense down, 147MP, takes about 5 seconds to cast and recover from if you include magic delay. So it's about 4MP/defense down and 7.5% defense down/second. Also, it moves around with (after this update) whoever you cast it on and affects everything nearby. Instant activation time.
* Box Step - 23% defense down at level 10. Costs between 500 and 1000 TP to max out and takes between 15 and 20 seconds of forced JA delay to reach max potency (respectively). It is single target. So it's 22~43TP/Defense Down and 1.15% defense down/second. Not only that, but will take (even after this patch) at least 35 seconds to hit max potency (currently something like 1.5 minutes).


So no, Box step is not going to be overpowered if they scaled its potency up so it was 23% at level 5 daze and reduce the max daze level back to 5 (effectively 2.3% defense down/second). It would still be the least efficient Defense Down option, but the job would suck less to use.