EOS is very interesting, much like all the Graphene based systems we have today. But it would not help Gridcoin become more trustless in the fact that it still needs to rely on the BOINC projects statistics that they generate and base the rewards thereafter.
But as @dutch points out, this is the reason the community votes on new projects and that not all projects are just automatically included.
The network itself is secured enough with the basic PoS system that it is built upon.