Complex sentence: Another option is to more rigorously vet journals, for example by further empowering DOAJ or OASPA, or by creating a version of the impact factor that better fits open access publishing.
Split into simpler sentences: Another option is to more rigorously vet journals, for example by further empowering DOAJ or OASPA. Another proposal is by creating a version of the impact factor that better fits open access publishing.