As Jon pointed out the RNG on the recipe for the 30% res packs has an extreme impact on possible growth for an account.
I will break down just how broken this event is for different players in this lengthy post with some math in hopes Inno will be able to think ahead in the future with simular models and fix this event for future uses with mine.
I will refer to Bronze as B, to Silver as S and to Gold as G
So there are three levels of expensive for the recipe:
1: Cheap: BSG.
2: Medium: BBS, BBG, SSB, SSG, GGB, GGS.
3: Expensive: BBB, SSS, GGG.
If we assume the odds of getting a certain recipe are random we could conclude 10% of the player base gets the cheap recipe (as there are 10 recipes total), 60% the medium and 30% the expensive recipe.
Inno does not disclose any odds in this event so we can assume the odds are equal or the regulations of the Apple app store are broken which requires games to disclose odds of loot boxes and likewise items.
The amount of pp required to buy a recipe of these three tiers can be put into formulas, x stands for the number of times the recipe is bought per day, so if x equals 5 this means 5 30% res packets in one day.
Cheap: 3(80((1+x)/2)*x)
Medium: (80((1+x)/2)*x) + (80((1+2x)/2)*2x)
Expensive: (80((1+3x)/2)*3x)
Let me showcase these formulas in a plot for 1 package:
Cheap: 240pp
Medium: 320pp
Expensive: 480pp
As this event runs 14 days, one player needs to spend 14 * (480-240) = 3360pp extra to keep up with someone with some other players who had lucky RNG.
Besides, 3360pp for 420% warehouse boost is insane, no event has ever come close to this ratio of pp per warehouse resource boost.
When we increase the number of packages per day, the difference becomes a lot larger:
Packages on x-axis, pp required on y-axis.
3 packages:
Cheap: 1440pp
Medium: 2160pp
Expensive: 3600pp
So say I have some pp to spend this event, 14 * 1440 = 20160pp
This would equate to 14*3=42 30% res packages for 20k pp which is absolutely broken in my mind, especially as players already spend more than that amount in startup.
Using the daily free materials over a course of 14 days this player could certainly get 3 flag boosters and decrees as well.
Say the player next to me had bad RNG, he drew the expensive recipe while I drew the cheap recipe and he wants to keep up with me.
14 * 3600 = 50400pp
We'd both have a total of 1260% resource warehouse boost (broken) while this player has to spend 50400-20160 = 30240pp more for the same.
That is a total of 300 euros worth of pp just for having bad RNG.
Imagine if I come onto 107 with 1000 euros to spend, the difference in RNG makes it worth my time to make 10 different accounts to find the one with the cheap recipe on it, that is just how unbalanced spending pp is on this event for different players.
When spending more, the difference only gets bigger.
Since there are 10 different combinations to choose from, some players will find the correct recipe 5 days (or more) later than others, which also makes a pretty big difference for competing players spending only a little to no pp.
All in all, the event is way too long, the amount of warehouse boost available for the amount of pp required is completely out of line with other events and the price per recipe per player is greatly unbalanced.
I don't know if this event was even playtested or thought through for more than a coffee break, it certainly doesn't look like it.
Anyone who wants to join 107 and missed this event has no chance to compete just because of how busted this event is.
There is no easy way to fix this event since shortening it dramatically would create problems finding the recipes you want before the event even ends, yet not shortening it is imo not an option.
Even though the number of items in the recipe book is cool at first glance, it doesn't add much value.
A fix would be shortening the event to 4 days but also dramatically decreasing the number of recipes overall.
A fix for the RNG per recipe would be to calculate the cost of a material as a class instead of the individual.
So any rare material starts at 100pp and increases with 30pp per purchase, so 1 bronze, silver and gold would cost 390pp while 3 gold would cost 390pp as well.
Possibly even increase numbers here to bring it in line with other events but more calculations should be done to find an appropriate price
Not directly related to this event but the meta in general:
The Meta created in which flagboosters, decrees and res packs are the only viable items to choose from is not fun.
Sitting for 48 hours straight behind my computer screen to pull resources to one village and mint is not fun, yet necessary to keep up with the top accounts.
Inno as a whole does not support coplaying yet allows it to happen, this meta you have created makes having a competitive account without coplayers impossible because there is no way I can weekly sit 48 hours straight behind my computer to mint solo, an account needs coplayers to actually have a life and play at a top level.
By introducing the watchtower Inno seemed to have a philosophy where they wanted to give solo accounts more of a chance, yet this meta you created does the absolute opposite.