If sprint wasn't a more negative than positive impact on Halo, they wouldn't be spending time making elaborate design mechanisms to lessen it's use in the overarching gameplay. To get sprint in Halo 5, we're seeing it be given a shield delay mechanism to dissuade sprint use while engaged in combat, plus after the beta, we're actually seeing base movement and strafe speed ratcheted up, while top sprint speed gets a decrease.
There is a difference in expecting sprint to be in the game and/or being ambivalent to its inclusion, and thinking it's a positive addition to the game play.