I'd like to thank the leaders and others who helped set up the events. (As well as everyone else for being good sports.) I had a lot of fun at both EU and NA.
I don't have complaints but I do have some comments/suggestions on how to keep everyone actively engaged for longer.
Amazing Race was so much fun that I ended up playing in both EU and NA. There was good variety of tasks and the clues were the right level of cryptic.
Hide & Seek: NA (Fields of Ruin) had a good variety of hiding spots (if your aim was to be found). EU (Frostgorge Sound) may have been a bit too difficult because of the extra dimension when you're in the water (admittedly, I am not a fan of water temples/levels in (3D) LoZ). Suggestion: avoid maps with large water components (and Orr...).
Scavenger Hunt: Having a group that had map completion was definitely a boon when it came to the heart vendors. The time-limited event-spawned merchants were a bit hit-and-miss and can give those teams who complete the event first an advantage (as others need to wait for the event to reset). A short guide to map-hopping might be useful, but this is difficult to mitigate.
Overall, the 2 different styles between EU and NA were well-suited to the number of participants.
Progressive Elimination (EU): Everybody started each round on even footing and with an equal chance at winning.
Race to the Finish (NA): Everybody got to do all the events, but it can be difficult to catch up (and difficult to know how well you're doing).
I'd consider a middle-ground to let everybody in on the fun while getting them actively competing at the same task:
Everybody needs to complete a task before the next task is revealed
Instead of eliminating a team each round, each team gets a number of points according to their placement. (e.g., 2 for placing first, 0 for placing last or for taking too long, 1 otherwise)
Asuraball fulfilled that deep-seated desire to watch Asuras soaring majestically. Ailarin's commentary was also great.
This took a good chunk of time in NA, but there doesn't seem to be a good way to address that issue.
Multiple arenas? Too expensive.
Limiting the number of teams?
Interspersing ~15-20 minutes of rounds between the larger events? Can't guarantee people will be able to stick around for the whole shebang.
Stretch it out over a week with the finals on the birthday? That's a nightmare to schedule.
Schedule matches concurrently with other events?
Assassin was a load of fun (and a load of soft wood logs) despite how long it took (that just means more fun was had). I quite enjoyed accidentally rousting people from their hiding spots.
Map Size: Dredgehaunt Cliffs was too big. The Grove (and likely the other cities) definitely seemed more accommodating to the event (free waypoints!).
Hiding felt like the winning strategy: Maybe it's not because I have only one anecdote. However, it might be nice to transition to a second phase when only a handful of people are left. Perhaps drop the "hide" portion and just have "seek" (the leader); the last person to find them gets eliminated..
Trivia gave me a chance to put on my Googles and dive for answers (and 6 gold).
While I don't truly know how many people were messaging Saith, it seemed like participation went down as the rewards were going to the same set of people. In the interest of garnering participation, I would suggest capping the number of prizes any one person can collect (after 3, I felt bad; I think Shambles also opted out after an impressive winning streak).