[i]Edit: TL;DR at the bottom.[/i]
With the new update, weapon parts will (likely) be sold for glimmer, [i]but what I fear is that glimmer would be harder to get.[/i]
Marks became more important for infusion and buying stuff - marks became harder to get.
Weapon parts became more important in reforging (HoW), and infusion - weapon parts drop rates were nerfed.
Heavy ammo became a source of faction rep - Xur increased the price for them.
Xur got new items and exotic shards became necessary for infusion and later reforging - Strange coins became harder to get.
See a tendency?
[b]TL;DR / conclusion
Whenever a resource becomes more useful, they make it harder for us to get.[/b]