Another point...
Space Marine where pretty impressive armour, they are frontline fighters....want snipers, play Imperial Guard.
S.
Not necessarily. In Codex Compliant Chapters, Tenth company in the Scout company and they do not don normal Power Armor and their whole business is infiltration, intelligence, clandestine operations and sniping. I would say it is a moot point, but since Chapters dedicate an entire Company to it, it is a little more than a non-point.