Unfortunately we must have a government in the meantime. I think a government where we strive to elect the best mem and women we can until He comes back to rule as King.
I walk with the Lord as most people I know who are Christians and we vote to select the best we can or mitigate the damage from the secular voters. We will never have operfection until Christ comes back. But we can be good stewards and try to the best of our ability. I abhor your approach, but I pray that God blesses your efforts AND mine. We can still be brothers. I realize we will never convince each other.
You keep supporting that which is proven to be failed, and I will keep looking for a way to repair the failure.
You'll probably cancel out my efforts by doing what you've always done. And only by suceeding can I cancel out yours.
Looks like a stacked deck. 
I don't remember any specific way that you've given, other than to complain about what IS.
What are your specific plans?
Well, I've presented them here hundreds of times, but will briefly go over it again for you.
Unity. Unity in the Body. Christians actually working as one; as instructed. Using the common ground of His commandments to change the world. Living for Him and not serving the world. Supporting each other; providing an example for all. Becoming that shining city on the hill. Drawing more and more to Him.
That's it. We don't get there by doing what we've always done. We have to go another Way. His Way.
I am asking for specifics. Not big ideas.
What will you specifically and personally do to change the system?
Well, specifically (as I keep stating over and over again), a united front of those following Christ would not participate in this flawed system- at least for a time. If change is desired, first notice has to be achieved. If however many millions of Christians in this country did just one thing in unity - such as not voting- notice would be served. I would think a statement of that unity with some specific objectives might also be in order. Something of a "Christian Contract with America", perhaps. Notice served that the Body is going another direction. Then, support of and for one another within this society. Business, heath care, etc, etc. Not an overthrow of the flawed, but an example of a better Way. An option for those wanting better.
America has a great base to build on. But..................................those we continue to place into power have no desire to build. We have to have the courage to lead. We have to be the example. We are not that example when we support the flawed. As it is we build nothing, and worse, allow the ongoing destruction.
We are capable of better. Much better.