Talk:Spy 2.0/@comment-5.44.168.159-20150215225714/@comment-17703786-20150216092357

"The decison whether take or not to take Loki depends on your goal : if you want the gameplay take anyframe but Loki/Ash/Banshee/Nova, if you want the rewards - take said frames, preferably Loki."

The thing is, they're not really necessary at all for the rewards. As long as you can complete any of the vaults undetected via use of silent weapons, timing, and using alternate passages you can use any Warframe you want.