Vault weekends during battlecrashers event are clearly a bad idea.
First, vault and battlecrashers event do exactly the same thing : replacing a unit by one of the event. What is the interest to have 2 events that does the same thing at the time?
Second, battlecrashers CLEARLY influence the drop rate of gnomes.
I know that the opposite has been repetead many times. But as we say in French “observation is stubborn”: the gnomes drop rate is much lower during battlecrashers event. And this is ruining the vault event.
So I don’t know how has been programmed the arrival probability of battlecrashers and gnomes. But I see an easy way to have battlecrashers that lower the gnomes drop rates.
Let just say there is a 1/3 chance to have a battlecrasher and a 1/5 chance to have a gnome. So, over 100 battles, you may have 33 battlecrashers and 20 gnomes.
But, what we know is that you can’t have a battlecrasher and a gnome in the same battle.
And the “20 gnomes for 100 battles” become “20 gnomes for 100 battles without battlecrasher”, leading to need 150 battles to find the 20 gnomes. And a global drop rate for gnomes that decreases from 20% to 13%…
So please no vault weekend during battlecrashers event