I'm actually testing a list with 4 blood moon and 4 root maze in MD and it has worked well for me. Blood moon hurts almost every deck somehow and with birds/esg you can have 2nd turn maze+bmoon or 1st turn maze + 2nd/3rd turn bmoon. The downside of MDing blood moons is that I don't have enough space for burn and thus makes my aggro and welder games harder, but as it has been said, aggro is pretty random nowadays and workshop matches are still favored to rg. Here is the SB I'm currenlty using:

4x REB
4x Pillar
1x Naturalize
2x Fire/Ice
4x Artifact Mutation

-Adarin