Hello, I have an idea that could go well with the current layout, wouldn't break it too much.
Add a Blue Star (or an "ML" icon in place of the star) to denote that the current player has master levels for that specific job.
Then display his Master Level instead of his job Level.
Let's say Sechs' BRD is ML 30.
Instead of a yellow star with 99 to its right, this new system would display the new icon and a "30" number.
I have no bloody clue how the data could be fed into FFXIAH and if Guildwork could be expanded to do that, I was talking just about a possible layout.
Let's face it, we'll have to live with ML for a long time and they're gonna be an important instrument for all of us players and users of FFXIAH so I think we have to strive to find a solution for that.