Well, now that Slade has found the final number and amended his post... it's a way bigger window than he first had (seriously, it's HUGE), which is awesome. It makes it great to use on prediction when taken in combination with the wide variety of attacks it impacts. "They're gonna throw something at me, so I need to be twirling around at this general time." And if you're already in 8wayrun, it's even great on reaction! Hell, you showed that during your match with HolyCarp.
The problem is the quickstep. 6~20 does not include the quickstep. With the quickstep added, it's 16~30, which makes it no good at disadvantage unless we can get around the quickstep somehow. I'm about to leave from work, and once I get home, I'll go into training mode and see if there's any way at all I can get around it.