Locked Capital and Absence of Value Reciprocity in Pass Tier Upgrades

Description

The protocol manages 3 tiers of entry tokens (GENERAL_PASS, VIP_PASS, BACKSTAGE_PASS) mapped under an increasing hierarchical value structure. The attendPerformance function uses getMultiplier() to fetch the highest tier owned by a user to dynamically calculate BeatToken rewards.

However, the protocol lacks secondary management loops or liquidation routes for previously acquired lower-tier tickets. When users obtain a premium pass tier after holding a basic one, their basic ticket sits completely stagnant inside their wallet address.

Risk

Impact Medium

• Locked Capital: Assets used to purchase lower-tier tokens remain permanently locked inside the system's tokenized ecosystem without a structural exit path or resale framework.

• Negative User Experience: Users hold digital inventory that retains zero practical utility or active reward yield because the protocol automatically bypasses it in favor of their highest pass tier.

Recommended Mitigation

Implement a Trade-In (Upgrade) Mechanism: Refactor the ticket sales loop so users holding a lower-tier pass can interact with a dedicated upgrade channel. This channel should burn the lower-tier pass, require the user to pay only the residual asset value difference, and issue the higher-tier token seamlessly.