fastest/most mobile class

Hmmm?
NLs have haste coupled with FJ, and most NLs I see can go faster than me if constantly FJing while I'm recoil shot+wings traveling. The pot lag makes it more difficult to keep yourself alive, but I don't see it slowing you down to below a Corsair's level at all. Even with the KMST balance patch, recoil isn't faster than FJ.

Night Lords should be kept first in line in terms of mobility, imo. The day when they make a Night Lord slower than any other classes in this game, is when sh'ts going down. Because all a NL is = speed and power. Corsairs are more so for versatility, because Corsairs can easily switch modes, from Cannon -> Rapid Fire -> Cannon, etc. I doubt they'll change NLs much in the future, lol . . . thank god. Though it's obvious on paper that Corsairs > NLs.