Greater risk of running out of matching funds for specific EA charities.
Meta/community EA charities are kind of a public good in EA, so may go underfunded. You could require all matchers to match such charities (or at least one of them), though, although it would be good to ensure there’s consensus on what counts as a meta/community charity. E.g. 80,000 Hours is the closest to one of those listed now (and none of the others seem like meta/community EA charities), but they’re also pretty explicitly a longtermist organization and have their own cause priorities.
Some potential drawbacks are:
Greater risk of running out of matching funds for specific EA charities.
Meta/community EA charities are kind of a public good in EA, so may go underfunded. You could require all matchers to match such charities (or at least one of them), though, although it would be good to ensure there’s consensus on what counts as a meta/community charity. E.g. 80,000 Hours is the closest to one of those listed now (and none of the others seem like meta/community EA charities), but they’re also pretty explicitly a longtermist organization and have their own cause priorities.