Isolation Platforms under Line / Power Conditioners ..any thoughts ?

The only way to know for sure is to try it.
With that said I have large brass Audio Points under my two Isolation Transformers (over 100 pounds each) and there is improvement.
Yes I think you will hear improvement however I'm not sure whats the best product to use.

Why not try isolating the power conditioner with Super Stiff Springs? Springs are very cost effective.

Geoff Kait
machina dynamica
isolation and resonance control

I haven't heard any component, power conditioner/regenerator or otherwise whose performance is unaffected by resonance/vibration control.  In my experience, any time you can mitigate resonance/vibration you realize an improvement in sound.  I have Black Diamond Racing puck/cones under my PS Audio Premier regenerator.

Agree with geoffkait that you don't have to use a fancy (read expensive) audio tweak.  There are materials available at Lowes/Home Depot that can yield a desirable effect.

IMHO  ALWAYS do what you can to reduce resonance/vibration in your components.  This includes modifications to the interior of a component as well the exterior.  

Look at Symposium Ultra Stealth top for best sound i have 2 Audience 6TSSDOX units on Symposium custom amp stands .

I just experimented with this last week. I found X 4 Herbie Audio Lab Superior Decoupling Spikes lying around in my storage room from a previous project.

The idea of wanting to implement some form of isolation on my Torus Power RM20 Iso Trans has been rattling around in my head for quite some time since it's always just been sitting on the floor supported by its factory rubber feet.

Well I ended up placing those X 4 Herbie feet (points up) under the Torus RM20 and started listening casually at first then more seriously later.

In the end, if someone twisted my arm hard enough I think I would be comfortable saying that the feet made a slight difference for the better in terms of center image stability and focus.