Thanks! Found a helpful lass restocking at a Kmart last night, asked nicely as the pegs were bare, and she came out with a Shredder (v2) and a Mousers pack for me. I've only got Metalhead (love the design), SDCC Leonardo, SDCC Shredder, and the Classic 90s figures. The new Shredder sculpt is great, but I'm not a fan of vac-metal stuff, and the mousers are generic enough to go with the classics.
Cheers for the heads up!