That is a horrible reason, server side physics would be a great addition to Blockland if they could be implemented without any problems.By that argument, Blockland shouldn't have any deathmatches.
nit i love you but OP wants realistic physics so that bricks will fall if they're not supported enough. what do DMs have to do with that?
Lua is a scripting language not a game engine.
It's a building game, not a killing game, i guess.