Keeping it sweet and short..

As terraforming into lava seems to be lovely feature,

I think that I would add 2 other terraformings into the game..

Terraform into deserts (dry up the land). (Something broken lords would love to use)

Terraform into forests (fertilize land and plant the trees). (Something wild walkers would like to use)

All is possible but it's very improbable to see these changes.

Moreover, too much terraformation kill the terraformation. It's becoming banal. I like the fact only Kapaku can do it, and it's irreversible.

the fact they added DLC to the game AFTER SO LONG after release, EVEN IF it was another studio, it show they still want to add some content to the game before another sequal.