I can tell you that's an accurate and detailed description of the situation ! :)

Feel free to contribute to my GitHub repository: fork it and request a merge. As soon as you'll do I'll be notified. Then I'll contact the author of the contribution and decide of a release plan. If I don't plan to work on e107 Importer plugin, I still can release and push it to the official WordPress repository for you.

In a word: please contribute code on GitHub, I'll do the rest ! :)