Was it intentional? I hope it wasn't intentional, I loved how lava affected unit freedom of movement -> maps with unique gameplay.
It was like this in alpha... and for a long time too. Apparently it's a pretty hard fix, it has to do with the new pathfinding system. I hope they replace the current lava with something cooler, something that glows and animates in a gorgeous way.
Reminds me of Char (Starcraft). That planet has alien plants on it too. I would like to see that, volcanic alien plants. That just made me come up with a vegetation slider for the editor, allowing you to affect how much of the planet is covered with forests and stuff. Ideas!
Reminds me of that children's game... just in reverse mode. But the floor is floor too... aw... they make children's games too easy these days. No wonder there are so many retarded kids around these days.
There needs to be a contrast between magma and volcanic rock also some glow from the lava. Boom polish. Edit: as it stands right now difficult to say what is what.