You, sir, are completely misinformed and thus are speaking out of foolish ignorance. Take it from me, FF4DS is pretty much the only good thing to come out of Square since the original Tactics.
Ignoring that Golbez is Chairman Freaking Kaga, the amount of new content that's added is stunning. Even for someone like me, who's read the FF4 Settei Shiryou (the precursor to the Ultimania guides), there's new stuff to be found. And it's all completely consistent, largely because they're working from source material written before the company went to dirt. Your argument basically boils down to "they're remaking it," without a single thought as to how this is in all respects a better remake than FF4 Advance was. If nothing else, Golbez is Chairman Freaking Kaga.
If you've got to complain about something, complain about FF4: The After, which is the sequel they're releasing for Japanese cell phones only. If you're not on top of FF4 enough to even know about that sequel, you don't know enough to complain about what Square's doing with the franchise.