I'd like to see a mixture of the two. So, full selection as in Destiny 1, but maybe a small bonus to pairing certain perks to encourage people to use certain combinations (i.e. for instance, current Attunement of the Sky for the Dawnblade might give +10% Stability while in air). You could create quite a large number of perk combos that way, which [b]really[/b] adds depth to the game