I have a suggestion if you're having problems getting an update for Eloraam's RedPower 2 mod: If the development team is in contact with her, ask her to hand off the source code to team member who would be willing to update it for her and thus remove some of the work load burden.
I believe she's previously stated she doesn't want anyone else working on it, and doesn't want to open-source it either. I haven't got a source, but I think that's the common story.
Ultimately, it's her project and it's up to her to continue it at her own pace, which is fair. If you had built an amazing car from scratch, but were too busy to finish it right away, would you want someone else to finish it for you?
I understand that her delays are stopping some mod packs being updated past 1.4.7, but it's unlikely that the worlds created with those packs will be compatible with 1.6.