Change with upgrade of Reference 3a speakers?

Planning on upgrading my Ref. 3a Veena. I am doing the basic upgrade, plus new Mundorf capacitors and the Surreal Acoustic lens upgrade.
Has anyone done similar upgrades and what were the most obvious sonic changes?
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Not sure if this helps. But I had an older pair of Grand Veenas (~2008-2009?) and recently purchased a pair of GV from ~2012 with the Sureal Acoustic lens on the drivers. These were supposedly the final version before they dropped the Murata ST and went with the Be tweeter.

The differences I hear are that the newer pair will play louder without strain and have slightly more dynamic range overall.