Umm, I would say the prayers... and I can also tell the ones I hate the most... Lumbridge Port, Bank, and tutors. To me they kill the fun I had when I was a newbie, of: looking everywhere for a bank, and having to find the way to varrock or draynor... getting lost and dying off some muggers without being able to teleport... and being so excited of getting a new sword. Now, with the tutors, you get fancy looking swords off the bat.