While I understand the fact that you guys are looking for consistency, there is one thing that especially bothers me about this change. You are planning on creating packs based on RF, which is understandable considering its universal acceptance and diversity of supported mods. However, mods such as IC2 and Buildcraft developed their power systems as far back as the alpha days. Asking them to rework their entire mods for an API that has only existed since 1.6 seems a bit wrong. Yes, you could say that it is not about them reworking, just moving to a new spot, but kicking them out of the main FTB packs is pretty much a death sentence as far as their use in this community. Look at Gregtech from 1.4 if you need an example. Also, one of the most entertaining and enjoyable ways to use these packs is on a public server with lots of friendly people. So, honestly, making "Your Own" modpack would not really lend itself to playing with others on a lag-free server.