I think this must have crossed the mind of a least every marine player, if not every single 40k player out there.
So if you were a Space Marine, what would you be? scout sniper? someone with melta bombs or perhabs a thunder hawk pilot?
I'll start with myself: I really like going fast so I would be a land speeder drive, and because I live in Skandinavia I would say space wolves would be my chapter
If feeling evil go for chaos.
Your turn.
GO!
(and don't say you would be Marneus Calgar, unless you're prime minister or something)