This one is simple. Should TE's be included in the Flex spot? (Officially changing RB/WR to RB/WR/TE). This way you could play two TEs if you wanted to instead of a 2nd RB or 3rd WR.
*Since this rule affects roster decisions it will be applied to the FOLLOWING YEAR (2015). That way managers have an offseason of decision making to account for this change. In 2014 Flex will remain as just RB/WR.*