I can't believe we're talking magnetostatics again. They're pretty well balanced, in my humble opinion. I don't use them for anything except power teleportation, and even that I'm phasing out in favor of the shaft portals. The main reasons people used to use them were that they were very power dense and cheap, and that they allowed compact and precise power distribution. The recent gating of the engines has largely solved the first problem, while a better alternative to power distribution exists in electricraft, for the absurdly large amounts of power it can transport.
Now is not the time to quibble about cross mod power exploits. Now is the time to focus on development of native features, like the absurdity of the hydrokinetic, or the lack of a native chunkloader. Now is the time to create more endgame content, to use the power of our reactors.
Cross mod power exploits will always exist. Right now, I can think of an easy one: A friction boiler makes steam, which turns a big reactors turbine, which runs a magnetostatic, which drives the original friction boiler. The only way to remove them is to remove cross mod interaction, which would seriously cripple the mod. Sometimes, you just have to deal with the exploits.
Tl; dr, please try to focus your energy on gameplay enriching features for RoC and ReC, rather than fighting over old issues.