Yes it would. Plague won’t work with this deck unfortunately.

-1 Florist -1 Drake
+2 Rotten Applebaum

Much better sustain mid game and late with constant healing

http://www.hearthstonetopdecks.com/decks/rin-fatigue-warlock-kc/

My current deck build for control lock. Very similar to this deck but with some significant variations. So far 18-3 on the ladder.