Choice wins. Players have different needs, and one person's keepsake is another person's luggage problem.
Gift suites sound fun because players choose what they want, but they also make every bowl feel interchangeable. A signature item tied to the host city could become a lasting memory, provided it is useful and not more branded clutter. If you ran a bowl, would you offer a menu of electronics and apparel or design one genuinely distinctive gift for everyone?
