I dont see the point in getting 200m exp in any skill that already has the first 1-2 pages of highscores filled up. No one but yourself would really acknowledge your accomplishment, the exp and time could have been dedicated to other, more rewarding goals. Its different if your goal is 200m exp ALL skills or 200m slayer which accumulates lots of exp in a wide array of skills, but 200m cook/fletch/firemaking and maybe thieving are dumb if its your only 200m. I feel like its the "easy route" and would be less satisfying than actually getting 99 in that skill.