I'm going to use TFSS 1.0 as a model, save for replacing the Voyager figure with a deluxe. Thus the set is made up of six existing Transformers toys (the non-licensed molds from the movie lines, Classics, Universe, Generations, Prime and its iterations) with an allotment of two new head molds for retooling.
Here's who I'd recommend:
1. Ser-Ket from the Beast Hunters Ripclaw mold
A straight redeco for a fan favorite, comic-only character.


2. Shattered Glass Ironhide from the Universe Ironhide mold
Shattered Glass is a bit of a divisive topic, but I've enjoyed the setting quite a bit. However, I don't want to see another boxset for these guys, preferring to leak them out in pairs every two-three years.


3. Shattered Glass Dirge from the BotCon 2007 Dirge mold
And a heroic Decepticon to pair off with the evil Autobot.


4. War For Cybertron Barricade from the PRID Wheeljack/Dead End mold; new head retooling
But wait, you cry; Barricade is already getting a Prime figure. I still want one closer to his game aesthetics, and the game model fits quite well. The Dead End mold has a close relative of the head design, so that's the pic I've gone with.


5. Gutcruncher from the Generations Warpath mold
Your requisite Action-Master.


6. Scrapper from Generations Scoop, new head retooling
This one seems like a no-brainer, especially if we can give him a different weapon to work with


Though admittedly a bit heavy on Decepticons (I was thinking of Mainframe for the Action Master, but couldn't find an alt mode I liked) this would be my pitch. Any suggestions, Seibertronians?