Being a beta tester, and being on the opinion of "Welp thats too bad for you" I took the time to read a lot of these comments from new(er) players.

So my opinion has slightly changed as I gave it a little more thought. The new jobs start at 30, like most of the jobs. So I don't see why it would be an issue to allow access to Ishgard at 30, and thus have access to the new jobs. Hell you can still keep everything else gated and the Cs that plays when you first walk in locked until you walk in with the pre-requirements.

Hell the Machinist's job quest giver is in the 2.0 zone. Dark Knights just hangs out on a walk way.
I dont think this is too much to ask nor is really breaking anything. The only major flag it violate is the whole "Can't go to ishgard blah blah gates of judgment blah blah" hell if you opened it up at 30 that means folks would have to actually make the trip through Coerthas to hit Ishgard. Which isn't even that hard especially with mounts.