There is currently no use for duplicate relics, relic experience bottles have great audio but are unable to obtain through normal gameplay, and the experience bottles have great audio feedback but minimal impact on the average player unless given to them through a modpack feature.

The ability to recycle relics into relic experience bottles would give the old relic table a useful function while giving players a use for extra relics that are otherwise useless when found.

If implemented I can understand seeing a small rebalance of experience required to level the relics, as a secondary access to experience gain would be formed through salvaging.

Thanks for considering this feature!