i have to admit I was wondering about the physics ingame myself (the fact that I\'m a physicist may be somewhat correlated).
But since this is not our world we\'re playing in there is no need for gravity to act as it does on earth
Of course it would be easier if it would be at least comparable to our world. And to be honest, newtonian physics isn\'t that hard to describe (as copared to GTR (general theory of relativity)) and implement in a program although the calculations might get somewhat complex and thus time consuming the closer you want to get to a realistic physics system.
You could for example adjust falling damage to mass-of-char and flexibility (in terms of material (flesh or rock or whatnot) and physionomical considerations) and many more things which will never be implemented anyways (I guess that\'s a topic for the CS devs not PS).

Just to give this Roadmap idea some more fuel:
Moore\'s law (transistors doubling every 18 months) is actually still valid because it\'s the goal of a roadmap the semiconductor industry follows. That\'s because you want to make sure, everybody involved in building semiconductors deliveres their parts at the same time.
E.g. you want to switch your processing to 50nm but \'oops\' there is no subcontractor offering the machinery to do that.
So in generall I\'d say the more players (devs) are involved, the more sense lies in a roadmap.