Everything has been mentioned already but if your sipping on this during your workout I would go with BCAA's, citrulline malate, or the taurine for energy. Afterwards for recovery you can always toss in glutamine.
As far as taste, BCAA's maybe the worst out of the bunch but if you get a brand such as Xtend (grape) that has a pretty decent flavor it would go well with gatorade.
I only take creatine and have a protein shake every once in a while (prefer to get my protein from meats).
Are you saying that you don't take a protein shake after your workout? If so I would really suggest switching to a whey shake as it is absorbed much faster than whole foods which helps to prevent protein breakdown from your workout. You already have the carbs from your gatorade (I believe the powdered version is sweetened with dextrose) but you may want to consider just going with a protein shake plus some bulk carbohydrates such as maltodextrin or dextrose instead of mixing stuff with gatorade.