I started a Thread in the german section of this forum about this issue to discuss what the german community wants:
Concerning the sentence collector:
True, I would love to have this too.
You can use the Selenium IDE Browser plugin to automate smaller work steps for now. You can record and play clicks on a website with it. For example when all good sentences are successfully reviewed and only the bad sentences with one downvote are left, then you can use it do automate the second downvote. But be careful with it!