Although it can at times be confusing, mutate isnt a broken mechanic
Effects that modify the creature's power and/or toughness, such as the effect of Wing It, will apply to the creature no matter when they started to take effect
At most levels of casual play, getting back two creatures for three mana is a hell of a deal, especially given so pairs of creatures can either synergize or straight up combo
It just doesnt have the same sort of impact as seeing Cloud, or Tom Cruise, in this analogy
Multiple rares per pack ensure late-round curveballs, and guaranteed foils keep the excitement level high from pick one to pack three
Whether you are utilizing the additional combat step to your advantage, activating Planeswalkers again, or simply utilizing the big mana advantage you get by untapping your lands, Time Walk does everything you could want