FF14 is basically reinventing the wheel, except the FF14 wheel is also a square. The average MMORPG fan has far better knowledge about a MMORPG's netcode by the virtue of the fact that the average MMORPG has played many MMORPG where the netcode is not an issue at all. Suppose you are hired to design the netcode for the next big MMORPG. You'd probably say like: "Okay find someone who worked on WoW before and ask him how it's done". If no one from WoW is available you can try another MMOPRG, and assuming you played a decent number of MMORPGs it'd be pretty easy to eventually find some guy who worked on a MMORPG you played before that has acceptable netcode, and you'd have a workable game.

It should be obvious this is not how FF14's netcode is built, because there are no MMORPG that's quite like it (I guess people say it's like FF11, but in that case no other MMORPG ever had a netcode like FF11 either). While innovation isn't bad, there's a reason why we don't constantly reinvent the wheel, and certainly we don't invent the wheel into a square one.