As I took that journey into the world of randomness, some things come as to no surprise...
Compass Spins Started: 135
Compass Spins Ended: 0
Compass Milestone Completed: 277
Began: After q54 Completion
Myth I: Absence of a Surprise Box will yield a full leveled building without the need for diamonds.
Status: Debunked.
Reason: Without the surprise box reward, a player will have to try to go to 300 compass sails in order to get the final upgrade for the event building. This means spending diamonds or hoping the Incident gods were good to them. The IG wasn't good to me as I only got 4 doubloons from incidents alone (hence why I didn't rely on them very much). Kudos to those that were able to get more than what I got. Even if I get lucky on 3 sails per spin from the 4 doubloons I will get for the last day of the event, I will still be 1 shy from hitting the 300 mark. This means I will have to spend diamonds to get that mark. However, malice is always present so it will see me possibly spending for 5 bonus doubloons just to get to 300. I have the surprise box opened, so I am not worried as I am good at 260.
Myth II: Having the extra kit from the SB will yield a full leveled building without the need for diamonds.
Status: Debunked.
Reason: While it was possible with me in getting the full leveled building with just 277, a player will need 260 in order to have it all in place (including getting the last upgrade from q55's milestone). However, if you are short of the 260 line, you will need to spend diamonds just to make up to that point (if you're not lucky in getting any doubloons from incidents or the compass spins kept giving you 1's). The latter happened with a guildie as she is currently 11 short from reaching the 260 compass milestone (had she didn't have the SB, she would be way off from the 300 needed for the full building). She could be lucky in getting a 12 from the 4 doubloons she will get at event's end, but this is Inno, where malice and mayhem (All-State commercial) is present.
Depending on circumstances at this point, the need for diamond spending will be evident. The costs depends on how far a player is from a certain milestone, and how many 1's are projected as a result. Those who managed to make it far, kudos to them.