I was just thinking about things baseball could do to make the pitching more competitive without raising the mound or changing the distance to the mound so I was wondering . . .

I know baseball outlawed the spitball in 1920 as the result of Ray Chapman's death. I was just wondering whether the spitter is a lot more dangerous than the knuckleball. Was outlawing the spitter a reasonable reaction to the Chapman incident? Could the spitter be brought back safely to give the pitchers another tool in today's offensive environment? Or was the spitter too dangerous because it could be thrown at a higher speed (or with more movement) than the knuckleball?