Technically this isn't messaging; it's replying. But... I think people would enjoy survival a lot more if it was more like skyblock, except without islands. Where people owned small worlds, and could invite people to join them, each isalnd seperate to each other to avoid griefing, stealing, and building places reserved for others to build. And one good thing, to reduce lag, would be to have a worldsize limit of around 300x300 maybe, then if they're active players who actually deserve more space, they could sell items for money, then use that money to buy more land! It'd be a fun survival atmosphere, and quite interesting to see