As for the event itself, it is fairly easy and enjoyable, and though on Beta I had pretty bad luck getting daily prizes, with 5 days to go still on Beta, I just got the 9th artifact last night. Now I am trying for a 2nd base because I changed chapters in the middle of the event and would like the slightly better version for my little city there.
I like the new layout for how they did the standard three chest system, but be warned that they made one thing a bit more vague. This can confuse you if you are not paying attention and counting. It is still 20 points per grand prize, but it does not tell you how close you are to 20. There is just a bar that fills up, but with no numbers. Also, the chests, which are called beacons for this event do not say how many points they give, but they are worth 1, 2, or 3 points. There are none worth 4 or 5 points this time. One other thing, you cannot go over 20 points when you collect a beacon. So if you are 19 of 20 points for a grand prize, you will only be offered three of the beacons that give you 1 point when you collect them. I think this will help a lot in the rare times when you are on the final day of the event and need only 1 point to get one last grand prize. In the old system, you could get stuck with the three highest cost chests and no way to open them. With this new system, you would be guaranteed in this situation to get only choices worth that 1 point you need. This may seem rare, but it has happened to me in the past and I have seen the complaints both here and on Facebook from others coming up just short.