I'm not doing anything PROPORTIONAL to stake - you simply have to stake a given amount, somewhat like the master node scheme in DASH - but the amount shouldn't be very high - as there's nothing to WIN in staking, you don't care about your probability to mintmine, you only do it altruistically to keep the network running.
That is a flaw. Communism doesn't work.
This is not communism.
You help, the system can work, you don't help, the system dies and you have nothing to complain about. BTW, the fewer are the active minters, the higher the probability becomes that these minters can collude. If you don't mint, your fault. You contribute with your "civil duty" or you increase the chance for the system to break down.
That's enough motivation.
The way to game the system is to be a whale that corrupts the system with an incredible majority of nodes. If everybody contributes according to his stake, this cannot happen. If you don't, and you let the whale do, your fault, don't complain. And if the whale nukes his own system, his problem.
The system is not designed to "withstand the storm". The system is self-destructive in case people are not motivated in supporting it. As such, it cannot become a monster. It kills itself before.