I do love the shuffle board cash in method. It so much quicker then the other methods. And if you wait for a certain daily reward to cash a lot in at once, then that makes a big difference. So i like the shuffle board.
My main city i wasnt sure i would get all 9 artifacts on.. i ended at 19/20 presents to get the 9th artifact... yea.. so iv been colecting key drops around the city all day trying to get to 25 keys to get that last on. Its 4:30am (30 min before event ends) And i jsut got the last key to get that last present and thus the last artifact.
My second city is not so lucky. Hes at 14/20 on the last artifact with only 41 keys left (one square worth.) Even if he gets the 1/16th chance of the 4present square.. he would still be short of that last artifact.
And both cities completed all quests, got the 100 key email, and collected drops around the city at the same time. They both got all the same progression keys.
Worth noting however that my two cities did not have an even rate of keys appearing on the outskirts of the city. By the time i cashed in on my first daily exclusive, they were already 28 keys apart form each other. And both were at the very same point in the quests completed and bonus stuff collected. I also collected keys on the outskirts of town at the same time on both cities every time. (Since both cities are up on two different comps, i can literally collect one city, look over, collect the other city.) There was jsut a big difference on the over all value of the keys.
So if necro had that 28 key difference + the 41 he has now = 69 keys + the potential keys from city outskirts dropped after this moment..(would only need 6) That could have very well been the full 75 keys needed for three more squares on the cash in grid. And with a presentx4 available.... i would have to get that for sure, but it could be 6 presents worth. Which is percicly what necro is short atm on reaching that final artifact.
Edit: wow... I used the last square worth of points on necro right before the end... full new board, single presentx4 square, No others. ... .... single square cash in... and he got the presentx4! 0.0 Necro actualy got the 1/16 chance of getting that lol. So he was sitting at 18/20 presents for the last artifact, with 16 keys left...
So necro was 2 presents short. Or 34 keys worth at the end (for single present squares).