The dungeons become far more engaging an interesting around level 30. The Sunken Temple of Qarn is my first time recalling a dungeon that looked exciting and was very fun with challenging and interesting mechanics (reminds me a lot of AQ40 visually).
The limited content is definitely a bad thing, but I still remain engaged enough to continue for now, however if they do not add more content is not added quickly, this game will die an extremely quick death. In terms of your "commitment to a job" line for WoW raids, this is what I liked the least about WoW in general. My favorite part about FFXIV end game is that there is nearly zero trash in raids. Raids start, you kill the boss, then move on to the next. Each turn has a different feel, different difficulty, and different mechanics. If they can add more content quickly on the same level of fun as this, this game has an exceptionally bright future.
You did touch on a big problem though, which is lack of quests for secondary classes. The reason for this is that there ARENT ANY. Once you complete a quest with a character, it is completed forever, regardless of class change. When I started my leveling (Maurader/Warrior initially) I went through and completed every quest I could see. Later, I decided to switch to Paladin tanking as it was more my style (and currently Warrior is awful), and the only way to level was by FATE grinding for nearly 24 hours total. It was the worst leveling experience of my life...[/QUOTE
Recently reupped my subscription for six months. I'll try to hang in that long. FATE grinding is a mindless and completely unrewarding way to level.
I'll tell you the one thing I hate about this game right now
Recently I rerolled my character. Originally had a lalafell, made him dark skinned, and called him Nate Robinson. If you know basketball, that's kinda funny. Found out Lalafell are the the most annoying race I've ever played. Literally felt like I'm playing a 5 year old kid
So I started a human character from scratch. I'm level 20 right now, cannot get past the 3 starter dungeons to progress the story quest because nobody on my server does the starter dungeons anymore. So I can't get a mount, can't get into a company, etc. I've just been running around doing FATEs and sidequests for the past few days. They need to let me skip these quests
That is kinda funny! (the first part)
Fortunately in my guild there are people very willing to do the low level dungeons, at least for now.