The removal of old wilderness, this really changed how I play Runescape now.. I used to love the fact that I could be 11 years old(no, I wasn't immature), and still trick people into going into the wilderness, and blitz / ddsing them for mills. I just loved dropping the 10k, running back and seeing the person run for the money, which looked like mills, then blitzing. lol, sorry that I'm not typing in very good sentences, but I'm tired atm. ^_^.
I also miss scamming ingame, because it was good fun for me, and real life friends. One of my old best friends had two computers right in the same room, and we would get an uncommon item, like Monkey Nuts, and we would find someone that looked fairly rich, but not too smart. He would say "Selling Monkey Nuts, 5m!" Then I would PM our target, asking to buy Monkey Nuts for 15m.. Idk, the old RS was just A LOT better . :'(