You're asking for the wrong thing. You don't actually want/need the 8 man operations to have mechanics that are clearable with 4 or less players. What you actually want/need is more content designed for 4 or less players. Basically new tier 2 flashpoints and introduce tier 3 flashpoints.
My Wish list:
Tier 2 HM Flashpoints with new mechanics:
Collicoid War Games
Of course, I'd love to have brand new Flashpoints with new stories and new settings, but that will take quite a bit longer. For this, the devs already have the assets in place (script, 3D models, voice work, etc) and only need to work out new mechanics, add a few animations to accommodate the new mechanics, up the difficulty for a level 50.