Diluting skins out of fortune vault - is it feasible?
In older posts/videos I see mentions of unlocking skins as means of enhancing the odds of getting credits/a-coins in fortune vsults.
In my count, the "10" vault (the only one worth rolling) has over 500 skins. With initial 60% chance of rolling a skin that'd be over 8k keys (actually more because as you progress the chance of unlocking a skin decreases). I assume Plarium add new skins from time to time, and they can easily outpace the number of new skins compared to the rate of obtaining vault keys ingame.
Using the "5" vault first doesn't make sense either, you need an average 12.5 keys to get a skin in the "5" and 16.7 keys to get a skin in the "10" so it's not a much faster skin engin (not worth giving up the better rewards of the "10")
Am I missing something?