I am aware of that, however, it is not done as of now (or at least not that I know of). My idea was partially, that it might be a good idea on focusing to advertise this opportunity.
Furthermore, I am concerned, that just letting everyone rain as much as they want on a project may cause too much imbalance between the projects. This might lead to projects that are not yielding a lot of financial gain, like searching aliens, to suffer a lot.