[kenm2474]

Sadly Wave 20 is the Final Wave. Then its only DCnU. But I love this Idea.

JLA: Elongated Man, Wally West Flash, Rocket Red, Gypsy, Fire, & Ice
Teen Titans: Wondergirl, Starfire, Miss Martian
Captain Marvel Family: Captain Marvel, Jr., Tawky Tawny, Shazam the Wizard, & Black Alice - DC could let the family lie at just the three they've made to date, but the whole set would seem pretty cool.
Metal Men: Lead, Tin, & Platinum - many people will balk, but anyone who already owns Mercury, Gold, & Iron are fielding only half a team. The announcement alone would sell a lot of peg-warming Wave 16 Mercury figures.
Secret Six: Scandal Savage, Rag Doll, Jeannette
Batman Family: Alfred Pennyworth, Comics Commissioner Gordon, Dick Grayson Batman, Red Robin, Damian Robin, Red Hood, Ra's al Ghul, Talia al Ghul, Oracle, Batwoman, Huntress, Ventriloquist w/ Scarface, Wrath - Figs from various DC Direct series have filled many of the gaps, but so many of these figs are severely lacking in articulation or are out of scale
Superman Family: Lois Lane, Jimmy Olsen, & Steel (Natasha Irons)
Blackest Night: Brother Warth, Saint Walker, Red Lantern Guy Gardener, Sinestro Corps Superboy-Prime, Indigo-1, Munk, Star Saphire Fatality
New Gods: Granny Goodness & the Furies (various)
Super Friends: Bizarro, Mxyzptlk, Wendy, Marvin, Wonder Dog, Rima the Jungle Girl
Super Powers: None - The Legacy Mr. Freeze & 2011 NYCC Penguin should round out the entire line-up.
Earth-Three: Jokester, Quizmaster, Talon, Three-face
Suicide Squad: Various
Miscellaneous: Solovar, Vandal Savage, Emerald Twilight Hal Jordan Parallax, Mirror Master, Clock King, Garth / Tempest, Doctor Light, others?