Currently Doom's Devour skill doesn't grant him the abilities of player spawned creeps (Invoker flame spirits, Lycan wolves, Beastmaster boar, Necronomicon creeps, etc). I understand the abilities of player-created creeps tend to be significantly stronger than jungle creeps, which is why I propose that player-controlled creeps should be added to the "Can devour Ancient creeps" talent for Doom. It's a fairly weak talent as it currently stands unless you have just the right build for it, and the +40 Doom pure damage tends to be much stronger in general, especially on Agh's builds. Being able to take advantage of the abilities of powerful enemy creeps would make it a much more enticing choice in situations vs creep reliant heroes, and could give room to nerf the hero slightly in other areas since Doom is fairly strong this meta.