I’m not worried about rocking as most of the way more expensive versions from IsoAcoustics and Townshend Seismic Podiums rock alot as well. I guess theoretically the more rocking the more isolation is being able to be acheived.
For isolation feet, I expect there to be a general preferred "squishiness" and would expect SVS to have offered a product that met those expectations. Well they changed drastically so did their opinion as to the appropriate amount of firmness change? Or is this a total afterthought for them and they take whatever their distributor sends them and called it a day? I suspect the latter.