There are a few reasons why some might argue that Callipo shots (or similar products) should be brought back:

 1. Nostalgia and Popularity: Many people who enjoyed Callipo shots in the past have fond memories associated with them, creating a sense of nostalgia. Bringing them back could tap into that nostalgia, attracting older generations who want to relive their childhood experiences.

 2. Unique Product Offering: Callipo shots offered a unique way to enjoy a frozen treat, as they were portable, fun, and had an easy-to-consume format. The novelty of eating a frozen treat from a tube made them stand out from other frozen snacks and could appeal to consumers looking for something different in the market.

 3. Market Demand for Nostalgic or Limited-Edition Products: In general, there is a growing trend of limited-edition and nostalgic products being successful in the food and beverage industry. This makes bringing back Callipo shots an attractive option for tapping into that market trend.

 4. Targeting Younger Audiences: Callipo shots, with their fun and quirky packaging, could appeal to younger audiences who may have never had the chance to try them when they were originally popular. A re-release could cater to a younger generation looking for new (yet nostalgic) experiences.

 5. Versatility in Flavors: Callipo shots could be brought back with an expanded range of exciting new flavors, tapping into current trends in the food industry. This would give them a modern twist, making them more appealing to today’s health-conscious or adventurous consumers.

Ultimately, the key argument for bringing them back would revolve around leveraging nostalgia, uniqueness, and the potential for new and innovative flavor offerings.