Wow the stars on this really exploded! Well anyway the idea to auto-save replays in multiplayer is a great idea as well. It could be a simple toggle in the options whether or not you want it enabled. This seems like a very easy implementation. It always upsets me when I get a really nice play in multi and hit escape without remembering to save it. Hopefully Peppy reads this great thread!
Edit: Also the save failed plays is a great idea. It would be helpful to see why you fail in a map to help you practice. Just like in target practice when you fail you get a D. The replay data could show the same thing to make things less complicated, and show the score screen at the end of the replay.
Refrences:
Auto-Save Multi: t/140258
Save Failed Replay: t/87873
Edit: Also the save failed plays is a great idea. It would be helpful to see why you fail in a map to help you practice. Just like in target practice when you fail you get a D. The replay data could show the same thing to make things less complicated, and show the score screen at the end of the replay.
Refrences:
Auto-Save Multi: t/140258
Save Failed Replay: t/87873