I would suggest to keep only the special old games. But I think there are no stamps like "Tournament". I also think that no one will sort their favorite replays. I guess you can just save replays of certain players, purely for memory?
But in general, I do not see any point in these replays, the game is growing up, the old tactics and methods of the game can not be applied to the current realities.
I am in favor of removing all replays since the last old patch.
And further sorting them with some parameters
- Removing replays with one player
- Removing replays with a sandbox
- Removing of replays of the company
- Removing "blacklisted" maps (gap, astro, etc)
- Removing replays with desync
- Removing replays after (optional) 4/8/12 months