So I decided to look more into this since I saw someone wig out over an AW50 Lyla being used on Pastoral Gate instead of Mysterious Beast
The 3* gold for beating these maps are as followed
Pastoral Gate - 900
Mysterious Beast - 1,440
The Royal Road - 1,620
Dragon Hunting - 3,600
Multiplied by how many you would run on a daily cycle turns out to be
Pastoral Gate - 36,000 (900*40)
Mysterious Beast - 28,800 (1,440*20)
The Royal Road - 34,020/35,640 (1,620*21)/(1,620*22) depends on how many you run
Dragon Hunting - 43,200/46,800 (3,600*12)/(3,600*13) depends on how many you run
I then went to look at normal gameplay videos for these maps, assuming there have been no changes the number of enemies that appear will be shown while subtracting flying enemies (since we have no Gold Get character who attacks flying enemies)
Pastoral Gate - 45 - 0
Mysterious Beast - 92 - 11 = 81
The Royal Road - 56 - 8 = 48
Dragon Hunting - 46 - 2 = 44
Pastoral Gate is the only one I've seen a gameplay video of that shows the number of enemies killed with 1 Gold Get unit 44 so I have no data on how many grounded enemies in the other maps get killed for potential extra gold.
There's also adding the unit drops from the maps which are
Pastoral Gate - 4 Iron, 1 Bronze
Mysterious Beast - 3 Iron, 1 Bronze
The Royal Road - 4 Iron, 1 Bronze
Dragon Hunting - 3 Iron, 1 Bronze
I have not done any of these yet on my data collecting alt
to get an idea of the drop rate (any help here would be nice to help find an actual average outside of what I'm going to put). The drop rates below are assuming average is getting half the total you would from a daily cycle worth of runs.
Pastoral Gate - 80 Iron, 20 Bronze (24,000 + 10,000 = 34,000)
Mysterious Beast - 36 Iron, 12 Bronze (10,800 + 6000 = 16,800)
The Royal Road - 43 Iron, 10 Bronze (12,900 + 5000 = 17,900)
Dragon Hunting - 18 Iron, 6 Bronze (5,400 + 3000 = 8,400)
Bringing the totals without Gold Get procs to
Pastoral Gate - 36,000 + 34,000 = 70,000
Mysterious Beast - 34,560 + 16,800 = 51,360
The Royal Road - 34,020 + 17,900 = 51,920 (53,540 on an extra run)
Dragon Hunting - 43,200 + 8,400 = 51,600 (55,200 on an extra run)