This is the 2nd time I've beaten the DS version (I beat the NES version shortly after its release). The only thing I can find wrong about this game is the absence of a text speed option (I believe this is an option in the original NES version). This becomes annoying if you accidentally choose Divination since you have to sit though everyone's XP to next level. There really is no real challenge to this game, except for a little bit with the end boss (took me 2 real attempts to beat him (forgot to use the Bugle outdoors right before the final battle the first time since I thought you had to use it during battle)).
This is one of my favorite RPGs (and DQ is my favorite JRPG series), so needless to say, I was quite upset when I found out DQV, and then DQVI, did not get released in NA (for SNES).