Jim Miller/Gilbert Melendez would have been plush while Edgar/Maynard III gets ironed out and then they can do the unification bout down the line, but right now Melendez doesn't have too much competition in SF and neither Noons nor Masvidal are really at the same level right now(altough I love Masvidal).
As far as Pettis goes, I think he was gift wrapped a titleshot winning the WEC title and while talented, wasn't anywhere near the top contender conversation without that wall walk. First thing he gets in the UFC is a wrestler and he gets grinded. Same thing happens to him basically against so many top UFC LWs.
MY MMA RANKINGS
HW Cain JDS Werdum Cormier Barnett Bigfoot Browne Miocic Napao
LHW Jones Goose Evans Texeira Davis Hendo Shogun Manuwa
MW Weidman ASilva Belfort Jacare Machida Rockhold Munoz Kennedy Bisping
WW GSP Hendricks Condit Lawler Maia Kampmann Rory Ellenberger Askren Lombard
LW Pettis Bendo Alvarez Chandler Grant Gil Thomson Diaz J.Miller dos Anjos
FW Aldo Mendes Lamas Frankie Cub Lentz Kawajiri Zombie Elkins
BW Barao Cruz Faber Bibiano McDonald Moraes Assuncao Wineland Dillashaw