He should have multiple passives like newer frames often do. 1) Lowest possible threat level - always 2) Bonus damage against irradiated enemies 3) Invisible while no alerted enemies within 20m
1st I wouldnt give his decoy a damage stat but I would give it the ability to tag enemies with rad procs Health it should work like Molt from saryn tap is place decoy, hold is swap position with decoy You can swap with your decoy as often as you like, it has a 5 second swap cooldown that is negatively affected by duration
2nd His 4th becomes his 2nd, base range 10m. If already irradiated Loki gets a damage bonus against them
3rd Transfer stealth to allies . But would be cool to make it conditional. Like it teleports you to an ally and turns you both invisible, ally for 10 at base, you for 5. But if you target an enemy that's irradiated you get 15s of stealth and stab them
4th summoning Fenrir, you can ride him like one of the Duviri horses or he just attacks random enemies close to you can be modded with pet mods
We all know he needs some love. All he does currently is run around in stealth and maybe press 4 sometimes. Check out steves shocked little nod "He's not an unloved child" 😳
That's all.