I'm honestly shocked that the devs put precursors as rewards for doing strike missions. I have been raiding with the same group of people for over a year and a half now and not once has a precursor dropped in the exotic spot on a raid. I'm convinced that it isn't even a possibility as I've never heard of one dropping from raids. (Feel free to correct me if I'm wrong here.)
It's honestly insulting to us that the devs once again are hand feeding a guaranteed possibility of something so coveted as a precursor to the easy mode content that are strike missions, but not doing anything to encourage more people to join the raiding community. My suggestion of a change for this would be to create some sort of a similar chest/daily reward system in the aerodrome that can be opened weekly that has a possibility at obtaining legendary armor precursors. The common and uncommon drops could be mag shards, gaeting crystals, mini's ascended drops, etc. This would help newer raiders have a nice carrot of a possibility on top of already being able to work towards the collections and also keep it fair between the easy mode of strikes and the hard mode of raids.
Right now it just seems that being a raider is getting kicked in the teeth with the constant delays of releases of raid wings and then a new strike comes out every 2-3 months like clockwork.