I've thought about your concerns;
my solutions vary to the tune :
- the whole "realism" debate hopefully ends with the switch to mars skybox (from vanilla sauer)
- lava is now flesh/meat but can be waded through and left ... and right. ;-)
- focus of fear of falling :
a) on wooden sideparts,
b) from edge (which has been broadend and sloped)
So this now keeps the sideparts a treacherous ground but
also alleviates the tension of falling off map.
I really think this should improve gameplay,
I'm kinda fixed on the whole die through a mis-step on the sideparts ... even though I really think this sucks for playing the map in DMSP/SP - the monsters all end up at lowest map points - yeah : they're pool-partying in the shadows, cowardly scum that they are.
SP mode can now be played too, less pool-goers but still some wet-jobs!