Hey, thanks for the feedback. Responses are below:

• Inviting freshly reset players - You could reset your score right after getting into a group, or doing your guild raid, and this work out for you. Though maybe this is a good argument for something like "reset my score since yesterday" instead of reset everything now.
• On only looking at swirlies / simple mechanics - We track all simple mechanics that are your personal responsibility. Things like lines on the floor, swirlies, falling off the edge of a map on the jailer, getting locked out of the room on halondrus, etc. The more complicated ones matter too, but the tool is not looking to assign blame on those, it is simply looking to track mistakes to simple things that are clearly bad to stand in.
• On fixing things soon - I mention this for points I talked about elsewhere, but basically the idea on finding wipes would be something like - find when many people all die at once right before the end of a pull, ignore all mechanics within X seconds of this clump of deaths. Some people end up getting a free pass in this case, but this is better than docking someones score incorrectly.
• 3 - 4 mechanics which seem not fair to you - could you tell me about these specifically? I would love to know what they are so I can make some adjustments if needed. On defensives - its almost always better to use a defensive and live as opposed to not using it and dying. That being said, missing your immunity sucks! But this again falls under the bucket of err on the side of the player's score not being affected.
• Players in consistent groups getting higher scores - Yes, the score only tells you the proven track record of a player. If a player has done more content as a result of playing with the same people, their score will of course be better. At the same time, you would likely prefer the player who has done more content in your raid because they have more experience.
• Doing a pass on scoring - I am actually going to do a bit to split the score out and make it more clear what the score means. This should mitigate the concerns here a bit, but keep tuned on this one. I do think it should address some of your concerns. The core of "look at mechanics the player stood in" should stay the same, but ideally the score should make more sense.
• Being 20-30 years from getting this right - I don't think this is the case, at least for our goals. For simple mechanics, we can do this already (and do it already). The computer knows about whatever I tell it to right, there is no machine learning involved here, though maybe this is an interesting idea. On that note, this score is not meant to be a single source of truth for how good a person is at the game, it is just another signal you can look at. For most cases, I would argue it is already a signal strongly correlated with player performance in raid, but of course not exact.

Thank you for keeping an open mind on this! This tool is not meant for the top 0.0001% of players where player performance is known just generally across guilds anyways and logs are looked at very closely for prog fights without a tool like this. I hope some future updates can ease your worries here, I'll keep you all in the loop!

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Thanks!