if you will make new version:
a special face that only the room editors, Save Rooms, Room Rating & Sort by Room Rating, A block that only editors can pass through, teleporting blocks, Chatfunction, elevator block that moves up and down, a glue block that makes you slower if you stand on it, a block that disapears if stood on too long but comes back, one or two more hats , a creature with big eye that just follows you around ^^ and you must be able to step on it, water block
My ideas:
robot parts, bombs, items, coins to buy, a shop, hats, guns like shotgun etc., room types like war, creating, race, created maps to use, created birck groups like mountains, robots, houses, + it if you want these things