I am very disappointed to see that there is a limited quest list for this upcoming event. I have been playing daily for nearly 3 years and was so excited when the system for events had changed and allowed for unlimited quests. There is no logic in bringing back limited quests as you get out of the game what you put in and all this has done is upset players like myself who spend a lot of time playing. So I will finish the quest in a few days and then spend the rest of the event twiddling my thumbs..
The speculation over on beta is that the limited questline is just a hotfix to resolve some major balancing issues that have only just become apparent, and is not a feature that will likely appear in future events. With the event going live in only a few days they simply didn't have time to figure out and test a suitable solution to the original questline, so we've got this instead, just so the event can work, even if it's a bit ordinary. That's just speculation though. We have no official word on that.
*edit* To put things in perspective, the original questline on beta was resulting in lots of players finishing it with a mere 4-6 artefacts, meaning they'd never have a chance to get their building to level 10. Not sure if this new questline fixes that, so we'll just have to wait and see.