This is kind of a multi-part question.
1. Is there an easy way to upload video from Twitter? I believe they've now migrated to serving HLS. I couldn't see any way to upload these videos from the bookmarklet. Is there an easy way to do that? The video in question 2 comes to mind. My workaround was to just download the HLS segments and merge them into an mp4.
2. Is there any way to request an exception to the 2:00 cap on video length? This animation is 2:20 in length, but is original content and, as far as I can tell, quite worthy for inclusion in the collection. I can understand why it should be capped, but I didn't see this requirement listed on the upload page and only found out after trying to upload it with about 25 tags. That took a lot of effort for not a lot of uploading.