Playing since launch and you don't have enough super credits to buy a warbond? I've purchased five warbonds without paying any money. Do you just not farm super credits? Even without farming, if you've been playing for a year, picking up random points of interest loot should have gotten you the 1000 SC?
How have you not purchased a single warbond? I guess YMMV...
Anyway, I bought steeled veterans for my first warbond for the grenade, the senator pistol, and of course the shotgun.