Try as many tweaks as you can (based on your budget, space and patience level) before making such a big decision, otherwise you risk "throwing out the baby with bathwater."
Personally I tried a similar do it yourself solution for controlling speaker vibrations. I reluctantly switched to the Iso Acoustics Gaia footers for my speakers and I was stunned by the positive improvements. Like any specific tweak, you'll have multiple products to choose from no matter what component or issue that you choose to tweak. Good luck with your process.