Adding sugar? Personally, just my taste of course, I think a lot of fruit wines are spoiled by too much alcohol. Over 12% ABV is too high for dry wines. Sweet wines yes. I'm not saying you shouldn't sweeten up your wines. In a lot of cases it does make a big difference. Maybe it's just my weird preference, but I often do want to drink more than one glass with my meals. Social drinking, I love sweet wines with a good ABV, but not with my dinner.