"There is just little to no incentive to do them as they offer no SP"
Sorry this mindset keeps rubbing me the wrong way.

Quests in ffxiv will not (at this moment) will have any sp rewards.
The reason: this is a multi class 1 character game. Only 1 class 1 character games have exp rewarded quests. These quests tend to be a one time only. So if you did all the quests as say, a fisherman, you wouldn't have any quests for the other classes. And if they made said quests repeatable it would get boring, and abused players would just spam one quest to level up.