User blog:Waters Knight/Monty Tweets About 'Dust Levels'?

https://twitter.com/montyoum/status/466377846718730243

Monty is making it sound like dust (and aura?) have power 'levels'. If this is the case, buncha' new questions will arise. What limits a user from using a higher 'level' of... say, dust? Are they physically incapable of doing so or...?

If Aura has power levels as well, does that mean semblances have something akin to tiers in power? And how would one go about moving onto being able to use the next level of dust/aura?

Then again, Monty could be at it again and he's a-trollin' us.

Thoughts?