Guild Wars 2

I know druid healer is meta, but I really like my ele and wanted to do something like this:

http://gw2skills.net/editor/?vFAQFAWn0XCtMgNYCeOAcYiFVAr4DEByAub1xaalIAsASiA-TxxGQBTS9HA8AA63FAIS6AkoSwKp8bI7PQKA/2bB-e

Are there any comps/raid wings where it would be viable ?

Both auramancer and water camping staff healer are viable healer alternatives to a Druid. Druid offers a lot more offensive support than these other options while healing, however, but both can be great if you have friends or a guild willing to support it.

We regularly have me as druid and another as cleric staff tempest on Mathias instead of two druids. There is even a video of a six man Mathias with only a water tempest staff healer. It is totally possible.
I have also zealot auramancer healed vg with dagger warhorn.

Druid is just the easiest because of the large bursts you can do in an emergency. However, like wow, there are many ways to heal and it can depend on group and boss as to which ones are viable.