PROVIDE DETAILS OF THE ALLEGED DMCA INFRINGEMENT (AFFECTED CLIP(S)/VOD(S))
I feel like this should have been a given from the start, but apparently not.
WHEN YOU SEND OUT THE INFRINGEMENT NOTIFICATIONS TWITCH, PROVIDE MORE DETAILS ABOUT THE INFRINGEMENT.
Don't just give us "information about the allegedly infringed work, who the claimant is, how the claimant can be contacted, and possible penalties under our repeat infringer policy", give us NOT ONLY names and links to affected clips and VODs, but also TIMESTAMPS FOR EACH INFRINGEMENT.
This information would provide users with a better ability to not only find the content that was allegedly infringed upon, but would allow users to dispute incorrect claims more efficiently because we all know that robots, while correct some portion of the time, are not perfect, and people will take advantage of any inconsistencies they can find within the system to create false claims for streamers they may not like.

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alinsa_vix commented
Twitch doesn't have access to this information. They get a notice that says "thing X is infringing, please remove"; they are legally obligated to remove the content and forward the notice to you, but they have no way to know where in a VOD a particular violation happens. Twitch doesn't create takedown notices, the music industry (etc) does, there's no legal obligation for the industry to provide those timestamps, and twitch does not have any legal ability to demand that information from companies filing takedowns.