If there is a unique n thematic solution to the problem i´d be all ears, so long as its not some degenerate macro n forget garbage. DK has already been progressively more n more dumbed down n at this point its rather zugzug already as is with only one rune type etc. I dont want to go further down that hole.
Good aoe n good single target should be completely seperated playstyles, I hate designs where AoE is built in free of charge with no drawback or compromise. Epidemic vs coil is about the only thing we´ve got left as unholy in terms of diversity.