Why not add the possibity to have a "sprint" (or any visual representation of a speed boost) that would consume some suppression resistance?
The need of a sprint is mainly (as of now) for backtracking in nearly empty hallways. And the need is real (particularly with a character using heavy weapons).
Consuming suppression resistance would prevent to abuse the sprint, introduce a risk if we encounter unexpected ennemies (surprise respawn) and prevent us to use it during a fight or to cross rooms that are not cleared in order to rush to the objective.
But I don't know the lore enough to tell if the W40K won't hate me for such a suggestion. :/