This suggestion originates from a comment kukelekuukoo made earlier today about how he wished there was the equivalent of ice for the pyro donation feature - Ie. A block that could be placed and once broken lava would flow from.

It isn't necessary, although it would make placing lava easier by avoiding the hassle of having to refill buckets. I set a powertool on a bucket to fill with lava/water if I need lots of one, however I often forget and then end up filling with lava when I need water etc. This would prevent the necessity of using buckets which can be irritating at the best of times.

I'm not sure if this is actually possible to implement however, so I apologise in advance if it isn't.