would you bee annoyed if some fans of this mod when it is updated to 1.10.2 reverse engineer this mod to bring the updates to 1.7.10 (I don't plan on doing it just wondering) since there are probably many people who spent weeks of time making what they consider to be the best mod pack possible?
There is no point in reverse engineering it. It's open source and has been for years. Just submit pull requests to the 1.7.10 repo and I'll validated them. So, to answer your question, yes, yes I would be very annoyed. It is not a difficult task for people to contribute to an open source project.