I used to collect everything, but since they changed it so we no longer get dust from sharding EV items, halved the amount we can earn from playlists and kept prices either the same or increased them (e.g. shaders), I just stopped. Even though there's a lot in the season pass/challenges, that soon goes buying the armour and gun ornaments, along with the shaders. Because of all this, I just stopped collecting most things, my bright dust is just piling up and my collections tabs for the last 2 years worth of seasons have huge gaps in them. It's nice to get exotic emotes (F*** paying 4000 dust for those) and ships etc in engrams, since they introduced that system and it caught up to when I stopped buying. My pile of bright dust now sits at like 35k, when it got down to like 700 at one point.