I would think that original FFXI players would be used to having little or no explanation behind the gaming system (for better or worse). You have to admit though, out of the 64 or so pages of threads in the FFXIV general forums, how much of the content is fact, and how much is speculation.
Also, no offense to the WoW player base out there...but I think a lot of the angry forum members are probably those used to having a LOT of gaming systems' operations being transparent (whether by design of Blizzard, or subsequent information uncovered by third party applications). I remember when I first logged in to WOW, it was strange to see how things were relatively straightforward (as opposed to having to visit forums like Alla and KI to grasp the basics of the job/game mechanics).
People just need to chill out and wait for an official explanation (which should be forthcoming shortly, judging by how much the surplus system is stirring up the community and the developers).
Take a look at my sig. Should be pretty obvious I've spent time in both worlds, and I've spent far more time in XI than in WoW.
I certainly don't expect SE to come out and detail exactly how everything works. I not only don't expect it, but I wouldn't want them to. I don't want the game spoon-fed to me. I -want- to figure out things for myself.
But it would be terribly nice if SE could just take 5 minutes to say (making this up) "We're adding a feature called "surplus XP; if you spend a lot of time leveling up as one class, you'll accumulate bonus XP that will allow you to progress your other classes faster when you change", or however it works,rather than just throw it in there and say nothing.
I certainly don't want, need, or expect a WoW-level of where the game practically plays itself for you (otherwise I'd play WoW) but the problem is that after 8 years in the MMORPG business (That's right, SE has been in the MMO business longer than Blizzard), SE seems to have no concept of their players.
I have an aunt. She LOVED to buy people presents, but she didn't buy things they would like, she would buy things she would like them to have. She bought my father, a man who has never drank coffee, coffee mugs. For one birthday, she bought me a Star Trek journal, despite the fact that I've never watched Star Trek and never had a journal. My mom is a Christian, and yet my aunt has bought her Jewish knicknacks. My sister has been wearing bondage pants since she was 14 years old (she turns 21 this November) and yet my aunt has bought her sun dresses. Excluding her wedding, I can not remember the last time I've seen my sister wear ANY type of dress.
That's what SE does. They come up with these great ideas that they think we should like, and give them to us with no concept of what we expect or want.