Some more little bits...
"Well, more as I go: The Riptide. Apparently it's highly posable, "featuring joints at ankles, knees, hips, waist, shoulders and neck". So this is good news at least modeling-wise. Also, Riptide comes with five support systems - I'm not sure if this means the kit contains five of these or does it indeed have five hardpoints reserved for the various support systems. I suspect the previous. There's a mention of a "velocity tracker" as a some kind of a new support system."
Nothing on troops choices that I've seen yet...
You're all welcome! Happy to help, BOLS is definitely my forum of choice so if I see anything else out there I'll make sure to let you know; more soon hopefully