I wonder how much they need to buff doom in 6.0 to compensate for DoT snapshotting. Even if they increased the damage by 100% it would still end up dealing less damage proportionally than today, as most dooms are 600% on pull and 250% after that.
Baseline Doom is probably the worst dps dot ingame, let alone you rarely get any value of it on adds unless they live for more than 30 seconds.