Oh no. My husband and I both love the brown sugar flavor. It was like eating chunks of cold brown sugar, but in a good way. (And I normally hate stuff that's cloyingly sweet.) Lemon is non-controversial but ubiquitous, whereas I've never seen brown sugar anywhere else, even in fancy ice cream shops. I liked that HD did something relatively original rather than totally focus-grouped.
I don't quite understand the "it wasn't brown sugar, it was molasses" comments. They're not different flavors--brown sugar is white sugar with molasses added to it in different strengths. So maybe some found it too strong, like dark brown sugar instead of light brown. Personally I like my molasses-flavored stuff strong (the molasses chews Trader Joe's used to carry were damn good).
Oh well, I guess I will have to drown my sorrow with ginger and passion fruit now.