@NorCal, I noticed with a kit Viognier that is now 4 years+ old that the apparent acidity, which my TA showed was not high at all (my notes say a TA of 4.3 g/L, though that was early in my winemaking career) really died down from even my two year old wine. The TA didn't fall back, but I think the fruitiness of the varietal, which I perceived as acidity, has muted a bit, which it should with a 4 year old white wine. It died back enough that my wife and SIL like it very much now, where before they took a sip and said "not my kind of wine". Just throwing in my two cents worth in that you may get more of what you are looking for with a wine aged a little bit more. I like most of my whites at 1-2 years old, so this grape seems to be a bit of an aberration to me.