Lana and Stephanie. 

Lana and Stephanie McMahon should stay in the main roster.

Lana is clearly feuding with Summer Rae, and everything is setting up for them to wrestle each other in either a singles or mixed tag match (with Ziggler and Rusev).

Stephanie is in the HHH category of saving his bullets for major feuds and angles, as she has wrestled the Bellas (with that feud main eventing Raw a couple of times last year), and has some business with Rhonda Rousey - which was set up last year at WrestleMania, and is rumored to culminate this year at Mania.

This is something relatively new in wrestling, where WWE is using people like Brock, Taker, Rock, Sting, HHH, and Stephanie in spurts for feuds leading up to major shows, then they disappear/fade into the background for awhile, and then they come back for their next feud/match, and so on, and so on.

Gotta have some wiggle room for stuff like this - no need to be so rigid.

 (talk)