Although I can understand the idea that repeating ideas clogs up the system, I have to strongly disagree on similar ideas being used in novel elements. Thats what there forums and posts are about - to discuss the legitimacy of the card in question being entered into the game. Ofcourse different elements make a huge difference even for the same skill, and that may not have been thought of until its case was presented here.
Your premise is completely legitimate - coming from the life guild, we had some problems in designing any mono-life decks that could beat air because of a single permanent - wings. Likewise when up against entropy we didnt have much to counter discord. Its extreme lack of PC makes it really weak as a mono deck, and that is something that could at least be improved with a card like this that provides weak PC for life.