i've wrote us a wee bit of a mod, mostly a proof-of-concept that enables the switching off of the default gravity factor press the W key, and you can cycle between "vertical", "radial" and "off" modes
"vertical" is the same as we all know, things will fall "down", as we're all so accustomed to....
"radial" allows for planetary-like gravity... things fall towards the center of the screen (some elements behave a little funny, but mostly, it looks pretty cool) *water and other liquids behave kinda funny*
"off" disables all gravity - simulates weightless conditions or perhaps looking from a top-down perspective
now, mind this does NOT disregard the actual mass properties of different elements, for instance - in "radial" mode, oil will still float above water, heavier elements will go closer to the "core"
i'll pack things up in a bit and upload now - hang on....