Make grevious wounds more accessible but less potent

Nothing feels worse than playing a healing champion and just getting shut the fuck down by

Nothing feels worse in itemization then being against a healing champion then being forced to rush

Theres a solution for both of these.

A) Make grevious wounds more accessible and strictly for t3 items. More items = more accessibility.

AND

B) Make grevious wounds do less. down from 45% to like 17%.

So you can potentially build more, and its less out of the way, and healing champs dont get shut down so hard. Balance the heals accordingly. Thoughts?