A potential problem with Deep Dungeon down the road...

[NovaLevossida]

I actually see this as a love/hate thing. I definitely can see the "hate" part of it, but with me the "love" comes from that very same thing though. It's kind of a "try it before you buy it", just getting the levels quick, enough for a small taste of what that class/job is like. Then you could decide whether or not you'd want to commit yourself to UGH!ing your way to 60, without having to actually do it first and then finding out the class/job wasn't all it's cracked up to be (for me, this would be the dragoon class). A real time saver.

I think you can achieve some basic level of competency at it if you look at the job abilities in advance, a guide, or a YouTube video. Doing that, I was completely not surprised when my MCH got gauss barrel in there. I'm not saying you'll know how to masterfully hit the perfect opener just as soon as you get an ability, but you can certainly know what to do in advance. The real draw, of course, is getting to see if you like how something feels to play. That's something I wouldn't have been able to accurately gauge about gauss barrel without trying it.

[Darkstride]

I'm pretty sure there are already plenty of players who level all the way to 60 through FATES and don't really understand their job or utilize it to its fullest. Levelling outside of challenging group content is nothing new.