Please see #6957 for a high level description of what needs to be done on this ticket.

_1 Upvote_ The current MongoDB driver shipping with Meteor is 1.4.39 but the latest MongoDB-native driver is 2.0.50. The new version supports very useful methods such as findOneAndDelete which would be available to be used on the server of meteor using rawCollection or rawDatabase. It would be great if Meteor could ship with a newer version.