Since its possible to notice if a pool with >50% is doing something to the network.
Brainstorming.
Would it not be good if it was checked from the clients on regular occassions?
And if it happens they start to use their some cpu/gpu increasing the power of good nodes?
A lot of people will not have their gpu/cpu running in the client, so it could add quite much?
Adding to the safty of the network, making it much harder to take over.