Less sugar is always a good thing. I usually use less sugar than recipes suggest, even if they work with raw sugar, which is less sweet than refined one already.

Btw., do you know this vegan cookbook site? The rest of the page (veganismus.de) is completly idiotic veganism propaganda ("Meat eaters are murderers!!11!), but the recipe secion is great:

http://tierrechtskochbuch.de/