Nobody uses the Reckoning armor anymore because armor 2.0 is a motivation killer. No way in hell I'm regrinding Reckoning to have highly specific sets of armor to clutter up my vault and have to maintain. Also, they apparently don't have a seasonal mod slot so, yeah, I'm going to use my taken mods (armaments lulz) on my Forge armor and eat a reaper synth. The prime sets are highly unnecessary unless you're a hardcore Invader or want to be a doofus and summon giant blockers.