Re: If VI had featured Saavik instead of Valeris as the traitor
Chekov as a co-conspirator? No motivation except for the false Piotr memory. Janice Rand would have been a logical choice, getting back at Kirk for kicking her off the ship all those years ago. And because he tried to do the nasty with her without consent.
I always thought she engineered the transporter accident in TMP via sabotage to get back at him for his double's antics.
"Many things seem clever to an imbecile." --Captain Thelin th'Valrass, USS Enterprise-- "The Chimes at Midnight"