As much as I would love to see items like this implemented, they could quickly become a requirement, and not having said items would probably lead to being called out, some form of harrassment, being excluded from content and/or being kicked, reason being healers shouldn't have to waste their mp raising someone who should have reraise. The meta is extremely fickle about pushing as much dps as possible from all sources.

Plus, it's a spit in the face of every summoner. Losing battle raise utility really hurts them.