1) What are some possible impacts of college football rule changes this year?  What about the blocking below the waist rule change?

The rule change with the potential to cause some issues is the requirement for players to miss a down if they lose their helmet on the previous play.  That could create some major problems if that player happens to be the QB.  Imagine an offense driving the ball for the game winning FG attempt or TD and the QB loses his helmet with 0:10 seconds to go in the game.  Having the QB sit out the last play of the half or game could have a major impact on the game’s outcome.