Make Bards Caretaker Shrines deal dmg or heal more

So i was thinking bards heal is already pretty restricted in terms of fast healing ... so my idea is to give it a nidalee trap like ability when its fully charged. A Nida trap so to say dealing dmg to the enemys based on how long it has been charging . Because a quick 30 hp heal is nice in early game but honestly most people gonna either lvl the q for agressive play or the w for passive play and in my eyes the w becomes lackluster even more lategame... Why ? because lategame u mostly need a quick heal in a teamfight and no fakking shrine charging fakkin 10 seconds to heal some 1 most people dont want to stay in one spot for that long in late game. Make it more versatile or give it a bonus % heal on missing health. If i want real healing i go sona or taric yes even taric does a better job. I often find myself casting caretaker shrine to speed up my allies to get assits more than for the healing purpose and i guess rito doesnt want to buff it cuz it stays permanently in lane but really thou you dont need it permanently. Most of the time the shrines get ignored or picked up too early anyways. I think thats the only ability that needs a retune maybe give his e some bug fixes and he is good to go.