Please, try to understand that the real problem in not having more level brackets is due to the jedi knight/sith warrior class. This class has no CC at low levels, and if you have to face a char with healing (noone knows why the trooper/mercenary class is so imba), you simply cannot kill him. It is not a lack of skill. I play all the classes. In the case of the classes with no CC, it is simply more DIFFICULT. And "more difficult", simply, means NO BALANCE. So, to reach the balance, which is the aim of a mmorpg, something must change.
Of course, when a jedi knight/sith warrior class reach the CC skills, it becomes a way more balanced class.
I still remain of the opinion that level brackets like 10-19, 20-29, 30-39 and so forth, with the bolster to the last level (19, 29, 39...) is a better solution. Just the solution adopted by Age of Conan, for example, a mmorpg that has a 4 year experience.
I'd like to see also the "Sprint" skill at level 10, not 14, just to add even more balance to the level difference.