you do realize that they need to create 2 class/jobs each time with the old system. it means create a class, then create the jobs.

by taking out the class it will give them more tool for make each jobs different.

by the way back to 2.0 he did say think about adding new jobs to the current class, however recently (probably while the e3) he did say that they don't plan to add more jobs to the current class.
like said while the Q/A of london, they learn and change stuff all the time, you can't expect something said for the 2.0 to be still in the plan, maybe they will have better idea and stuff like this.

that why i will not be surprise if at tokyo they simply announce agent or chemist or machinist.... but no musketeer. since is a relic from the tanaka period.