Terminal plays millions of matches each season, and currently, we store all of these replays, adding up to many terabytes of data being stored that very few people need.
We are planning on deleting all replays that are not part of a competition match very soon. If anyone wants to save a replay before then, it can be downloaded from the ‘watch’ link.
We are aware that using a diff-based replay format would dramatically reduce the size of replays. If we ever convert to such a system in the future, we will reconsider holding onto old replays.