Too not even allow players to build at their feet is pretty much just over the top. Blatantly says our time is meaningless to you.. In a building game, we are gonna take away the one thing it's supposed to do.
Excellent! Well-thought out, with perfect implementation. Some sort of congrats is in order I suppose, but I'll let someone else do it. I'm busy waiting too see when I can see the ground at my feet, to build and survive.
If the build engine was not a cantankerous lumbering player menace I guess you could call it a 'fun' challenge, across an entire biome? Deep thinking here for sure, keen and distilled game theory at work.