It sounds like you've engaged in some interesting experimentation with your hifi setup! Elevating speaker cables using wooden building blocks is a creative approach to tweaking your audio system. The changes you've described, such as greater clarity, improved soundstage, and enhanced texture, could indeed be a result of this adjustment.
Using risers or elevators to isolate components or cables from the floor can have subtle effects on sound quality. By minimizing vibrations and potential interference from the floor, you might be able to achieve a more focused and refined sound. However, the impact of such tweaks can vary based on the specific setup, room acoustics, and equipment being used.
It's not uncommon for audiophiles and enthusiasts to experiment with various tweaks and adjustments to optimize their systems. Different isolation methods, cables, speaker positioning, and room treatments can all contribute to the overall sound quality. What's most important is that you're enjoying the process and the improvements you perceive.
If you're curious about other people's experiences with similar tweaks, you might want to explore online audio forums, where enthusiasts often share their experiments and findings. Just keep in mind that audio perception can be subjective, and what works for one person might not necessarily work the same for another.
Ultimately, the goal is to create a listening environment that brings you enjoyment and satisfaction. If using wooden building blocks as risers enhances your listening experience, then there's no harm in incorporating them into your setup. Enjoy your music and the journey of fine-tuning your audio system!