Why not just have emote bundles rather than RNG, stuff that RNG, this is why CoD and Battlefield are regarded to be better than this, you can earn your desired weapon setup rather than this RNG spam but Battlefield can offer shortcuts such as vouchers (in Hardline) and a variant of the attachment you want (in BF4), I'm not criticising Destiny, I enjoy it, but we all need more direct ways to get stuff