I would love to see Kombucha and Chia seed drinks in the cooler section! Kombucha is delicious and so hard to find outside of specialty health/grocery stores.
I often find myself wanting to be creative at sheetz, which is inevitably suggested. How about at the self serve fountain drinks, there is a flavorless icee, that allows you to add your own flavor from the soda fountain? This idea will benefit all ages of customers.
There should be more diet caffeine free options at the fountains. More and more people are trying to avoid these things nowadays so this would give them more choices.
One of my favorite parts about the MTO menu is the drink section. I love the many different options there are for blended coffee drinks and fruit smoothies, but I think including a section for milkshakes would add an exciting twist to the menu, especially for the summer! People could choose their favorite base flavor and add things to mix in, such as M&Ms, peanuts, cookies, etc.
Coming from back east, places like Wawa and Turkey Hill have in-house brand iced tea that garner cult-like followings. The tea options at most Sheetz are awful in comparison!