Debbie, yet more ideas for you!
I eat my grapefruit salted, and it gives the impression that the fruit is sweeter, so on occasion I'll add just a pinch of salt to strawberries if they're underripe. One trick but it won't work for every intended use for the berries.
Combinations of acid & sugar, such as honey & lime, give the impression that the strawberries are sweeter and more flavorful. In general, honey is sweeter to the palate, so you don't have to use as much sweetener as when you use sugar. Another choice might be the combination of balsamic/oj and a bit of sugar if you still need it.
And I keep a tiny bottle of Boyajian's strawberry 'flavor' on hand (same maker that offers lemon oil, etc), if I need to make dipped strawberries and they're not strawberry-tasting enough, I mix up a simple syrup, add this flavoring, and inject it into the strawberries before dipping. It's a great pantry ingredient to have on hand if you love strawberries and happen to get an underripe batch. Just a drop in cut strawberries and you're sure they're super-ripe.
Now I'm craving strawberries, *G*!
R.