The interplay between your own actions and that of your opponent makes for an interesting dynamic, and enjoyed trying to work out the different combinations. Had a bit of a laugh when I nuked my opponent's base and they continued to put down tiles.
Would be really cool if there was a secondary aspect to the terraforming that is purely beneficial to you as opposed to being globally beneficial/detrimental (so you get the tug and pull of both wanting them to drive the planet's terraforming in the desired direction but continuously gain advantages that allow you to push your opponent out.).