the dilution-with-unflavored approach is the right fix for overly sweet protein powder - mixing 50/50 or even 70/30 unflavored to flavored cuts the sucralose load while keeping enough flavor to make it palatable. the sucralose escalation in protein products over the past decade is real; the sweetness arms race in the category has made the old products taste bland by comparison but most people find the new standard overwhelming when they go back to natural flavor preferences