Dynamic lighting, In-game paint customizers, In-game brick makers(last 2 single player only), Dynamic physics(explosions that don't travel through walls), smooth particle effects, Sound dampening wall thickness(10 block thick wall will let more sound in than a 20 block thick wall), Updated game launching(so i dont wait 20 mins for it to sort out add-on errors.), Vehicle Physics(drifting at high speeds, loss of turning at high speed, tunnel vision at very high speed, flipping at ludicrous speed turns, explodes after 30 second being flipped..etc...).highlight the impossible.
Build-able vehicles.
good vehicles
Highlighted the impossible.
Realistic lighting. Bricks cast shadows. It would be cool to go from broad day light to a dark cave built by bricks.
Blockland on one of these engines-ENGINE FOR BIOSHOCK GAMES
technic-like brickswill never happen though
run into car with skis, go flying across the universe.
ability to hide names