Would not be better if the Arbitration mods and Ephemeras (including from the Exploiter Orb and Shadow Stalker) could be bought with Vitus Essences instead of being rewards? Not to mention that
Warframe: HOW TO SOLO ARBITRATION | SURVIVAL - YouTube
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40 minutes in extraction arbitration 1200 endo. - General Discussion - Warframe Forums
Warframe PS4 Update 1.77 Patch Notes
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Arbitrations Revisted 2 & Drop Table Dilution : r/Warframe
When you see the new Arbitration drop table and realize you can feed your Ayatan addiction : r/Warframe
User blog:Jrjjue/Drop Table Diff | WARFRAME Wiki | Fandom