Before anything can be done by their side, I am sure the system can be exploited, how you ask?
If a insta win hack can be done ASAP,
1.Get upto 3 friends
2.Keep finishing the mission
3.Get Card Drops
4.Chance to get safes
5.Sell them on market or minimum value ($0.15 right now)
6. ???
7. Profit!!
And if you really don't like this update they made, this can really get exploited and I am sure they will shut down the whole update within minutes!