Brining ribs can be useful in circumstances where one isn't planning to turn out what we would think of as barbecue. E.g., one might flavor-brine with, say, a garlic- and wine-flavored brine (for an hour) and then rub with herbes de Provence and stick them on the grill or rotis; or one might flavor-brine with a garlic/ginger/soy/ brine and rub with sweetened mustard and Chinese 5-spice. But a straight brine in this sort of situation or for barbecue--no, I don't see the need nor any advantage.