I was pretty pissed at first when i saw that IC2 and Redpower were gone from the mod list, but when i saw that it had TE, AE, and MFR, i got excited. I've never messed with any of them, because redpower and IC2 took there place, but now i have good incentive to play around with them and they look really cool. Give them a shot if you haven't, being resistant to change means that when we have flying cars in the future, you will still use your cheap ground based one.(Resistant to any change, not just in mods)