As of right now there are 6 different currencies and a dozen or so materials. Although Bungie has reduced some of the clutter, it hasn't done enough.
I propose making glimmer and strange coins the only currencies. Replace legendary marks and passage coins with strange coins. So now glimmer will only be used to purchase materials, weapon parts, and lower level gear. Strange coins used for vanguard, crucible, faction vendors.
Daily crucible playlists give 5 strange coins, daily strike will give 5 , and nightfall 25. Motes of light can be used to exchange into strange coins at the cost of 10/1. They will now be used as an xp infuser. Isn't that the point? To reclaim all the light that was stolen by the darkness?
The reason I am proposing these changes is to make the game more accessible to a wider audience. Right now it feels like there are a trillion different things to collect. Not to mention there is tons of armor, weapons, class items, artifacts, ships, ghosts. Destiny is indeed a complex game with many different complex mechanics. Why not make it a bit easier. I understand every new patrolled area can get new materials but why so many?
For instance you introduced Moldering Shards and Three of Coins? Why not just use one type. Also you introduced Hadium Flakes and Worm Spores? Why make two and one only accessible via chests? Turn Moldering Shards into taken glimmer buff . Earn Moldering Shards from taken majors/ultras.
Make materials purchasable at vanguard quartermaster via glimmer at 1000/10, 100/1.
Speaking of quartermaster he should be moved closer to vanguard mentors.
Factions will take donations at:
1 strange coin per rank.
10 Motes of Light per rank.
100 Materials per rank.
100 Armor materials per rank
100 Weapon parts per rank.
10,000 Glimmer per rank.
I'm proposing these changes as I believe Destiny is a good game, and with the taken king it made it even better. Why not go further and make it great. The reason I say these things is I've played Destiny since year 1. Although I have friends that also have this game they feel overwhelmed by its complexity and mechanics. This is hindering their chance to advance.