I actually agree with this. The story keeps me content but the system backing it is not the best. But!
The dev team has said they're actually aware of this; that their quest system only supports limited tasks, and they're worried about players getting sick of it, and they're trying to expand its capabilities.
For this reason, though, I abhorred the relic quests. Pure grindy time sinks. I wish they were more like an epic journey, which the i80 part was a bit closer to. Sadly, by all indications, the new relics will be the same...
