I am all for dropping classes. Freedom is nice sure, but with as much freedom as the armory system gives us, we end up with a muddled sense of purpose. I doubt that this will change, but I do feel that the game would be better if it did.
I mean, lets look at what happens when you add different jobs to the same classes we have now; PGL becomes Monk as well as (I dunno, Dancer I guess). Well I already spent all that time leveling PGL to get Monk and I leveled from 30 to 50 as Monk to finish all my monk stuff. Now when dancer (or whatever) is released, it starts as a lvl 50 job, all i have to do is go do a few quests and boom I'm done with dancer. Also, dancer is only marginally different from Monk, because there are only 5 abilities (keep in mind that I haven't touched the level cap issue) that change the way PGL functions.
Another thing we can look at is the introduction of new classes and jobs. jobs like Puppetmaster and Summoner could be finagled as Jobs on existing classes, but lets assume that they come with a new class. First of all, unless the class is a pet class, from level 1 to 30 you have no pet. Unlocking the job grants you your pet, but you only get 5 abilities that are complimentary to said pet, making you very similar to the class you just came from. And if the class that becomes Puppetmaster or Summoner IS a pet class, will it be a 3rd type of pet (neither a Puppet or a Summon)? In that case you still don't get your desired pet until level 30.
Again, I doubt that the current armory system will be changed, but I do think it would benefit greatly from the removal of classes. Keep the requirements for job quests, (eg. lvl 30 Monk and Lvl 15 Drg) to be able to to your quests that grant abilities. As far as the argument that classes are needed for soloing is concerned; I say meh. I play an MMO to play with others, if I wanted a solo experience I'd pop in my copy of Skyrim. And really, I have done most of this game's content just duo-ing with my Pally-playing friend. Of course that hasn't inhibited my ability to solo most of the Path of the 12 quests or any levequest, as Monk mind you. For now the system is OK. But when more jobs are added, they would be best added with their own class to avoid the shared level situation. And if each class has only one job, then whats the point? Of course if they just kept the class/job ratio at 1/1, that would be fine with me.
PS. People don't hate the Armory system because it's different. People hate the armory system (especially now that there are jobs) for many other reasons. Just because some people crave a system that is similar to other MMOs, that does not mean they want cookie cutter games. If you play FPSs on console, would you be happy if the developer made the trigger button be that weird Thumbstick-click instead of a shoulder button? Certain aspects of certain games are simply proven to work within that genre. Being different is a good thing. But simply being great is better.