We need a system that allows players to exchange lower-tier universal shards for higher-tier ones. For example, 10 blue universal shards could convert to 1 purple universal shard and 5 purple universal shards to 1 orange universal shard.
This would make unused lower-tier shards more valuable, reduce waste and improve long-term player progression. It would also keep players more engaged, since every shard earned would feel useful rather than sitting idle.