+1 for me because I actually started my town around these only to have them disabled shortly after I claimed my town. (Apparently there was a bug)

 

Currently you can place them, but the effects should be disabled, correct?

 

Marking under review.
Have yet to make a decision on this.

 

I've now marked this in progress, however I'm not giving any promises as it may turn out that it doesn't work the way we want it to.
We will never obviously "add plugins" for silly things like this so please don't submit them for these sorts of suggestions guys, we have our own custom suite of plugins that we would like to keep everything in. (Bloating a server with plugins for silly things is one of the worst things you can do performance wise :p)

Anyways, this is now at the bottom of our development todo list, and I'm letting you know in advance, it will take us a long while to get to this. I'm talking, likely after 1.15.1.

 

Bump.
Still in our development backlog.

 

This is now coded and live on the server. :)
Conduits now give off NIGHT_VISION as well as WATER_BREATHING.

 

This has unfortunately been removed due to incorrect functionality and far too many issues.