I agree! Enviromental challenges are always a good thing! ^^ However, if they even removed enviromental collision due complaints (hell...now i look like spider-man...i can climb ledges 1.5x my height...its disgustingly boring you being able to climb like everything in the way) i don't think they would add such "tricky" maps.

Your suggestion has my support, tho! ^^ I'd love to see the infamous worms back to this game, but working like antlions lol! you are walking and BAM! It pops from floor and bites your ass! They you need to run at random directions until you free from it and, meanwhile, it keep draining your HP. It not only would be challenging but also extremely hilarious! I always liked that NM antilion from Attohwa that ramdonly pops when you step at cracks! We need stuff like this here too! ^^