A life sized TOS NCC-1701 would be nine hundred and forty seven feet long. That's longer than most skyscrapers are tall. It would be neat to see someone build a model that big, but even if it were only a hollow shell, the materials alone would still cost somewhere in the tens of millions. Paying the people who built it would probably cost a similar amount. It's just unfeasable unless your building a real starship capable of space flight. Humanity isn't quite finished bickering at each other and arguing over petty crap enough to do that yet. At the rate we're going, we probably won't be ready by the 23rd century either.
"One of the many, the proud, the friends of Zardoz".