This is an awesome idea. I would have the starting weapon be a sidearm. I also think the beggining should be you are treated badly by your kell/baron/captain and are docked. So you desert and head out towards the city in search of help. You fight through hive and other fallen. You eventually get to the city and after a lot of gun pointing, you are accepted with some reluctancy. You embark on a bunch of quests and eventually prove yourself. The city helps you get undocked. After undocking, you gain special access to the wire rifle, tracking pulse rifle things that vandals use, and arc swords. Your grenades include a trip mine (solar (more vertical hitbox) and arc(more horizontal hitbox)) and a flash bang. You don't get a double jump but your default jump is much higher than guardians (about the reach of double jump with higher jump) your super is you get a permanent camo with two arc swords or a ultra Schorch cannon similar to golden gun's power but fires sticky rounds. Just as a side not, this will probably never happen cuz bungie scrapped the idea of different stories based off the race of the player. The human was supposed to start of by escaping from a fallen raid and eventually making it to the city after running a while fighting through fallen. The awoken was supposed to start Out in the reef but you get banished by the urn and end up going to the city for help. The one we play today is the exo beggining.