Things i dont like: timers between gates are too big and unconfortable, so claims from video that play at your own pace is completely misleading, we need every day to actually finish it all, which leaves us to play at exact time every day which is once again horrible
i want to play every day after i have come home from work, which is not possible with current setup without using time boosters/diamonds, better way would be to have all 3 timers from gates run simultaneously after you enter new map (something like 12h, 15h, 18h, after 18h i could do whole map at my own pace) then timer for next map, and then again all 3 timer for gates simultaneously, we would still need whole week but with our own pace
second thing i really dont like is coin and supplies rewards, there is zero needs for it for advanced cities, we got plenty of it from event buildings, regular buildings, ancient wonders, and have 90% chance from 100 to get this is demotivating and feel unrewarding, there are plenty of other rewards you can use here for atleast some other chests (if not all) so there is more diversity between them
maybe others will like the chance to win 15 diamonds but i dont, it also feels unrewarding even tho its nice to finally win some diamonds from other sources
personally i have no clue how you want implement multiplayer in spire, if its just 4th map with no reward similar to FAs bottomless pit then no thank you, some vision from devs would be nice to know