What if Redemption was castable only while dead?
> Are you an enchanter? Do you love healing and shielding your teammates so they don’t die? Do you hate dying, not because you’re dead, but because you know your carry doesn’t stand a chance without you? No problem! Redemption not only boosts your healing, but also gives you an additional ability that can even be used while dead. With Redemption, you can give your carry a second chance at life, even if yours is already over.
-http://na.leagueoflegends.com/en/news/game-updates/patch/patch-622-notes#patch-enchanter-itemization
The strategic niche of Redemption is making sure you can still protect your allies after death. While alive, enchanters can still use their abilities to be useful. The PBE nerf on Redemption aims to just make the item weaker with less stat and weaker active. While I agree with the nerfs (it still gives CDR and decent amount of mana regen, but less tankiness mean it's more geared towards enchanters and not so much tanky supports, and heal was insanely strong), I think the direction of just weakening the item isn't the right way to go. It'll most likely remain a staple for support itemization like Locket.