ok I see some advantages and remain positive on 7.0 but the basic problem remains:
Obviously I am clear on the fact that with 6.0 to play the two proposed characters I also have to change faction, so guild, heritage warehouse, etc. ..
The program as present in the PTS allows me to be either a jedi sage or a sith assassin on the same character but NOT to be both at the same time.
The meaning of this post is that the styles of play change in the same character, the stored "positions" of the bar are also "reset", forcing me to move the icons, and change the specific healer / dps interface
so it is more practical for me to change characters than to change playstyles in the same character.
Unless of course one day you can also memorize the specific interface for each character and not just the clothes and weapons.