I think the best solution is to have the better ones mentor the lesser ones. It takes time away from coding in the short-term, but it is a good investment in your people in the long-term. Metaprogramming is something that any good programmer can understand if they are just taught well, just like all the other difficult parts of programming that people routinely like to ban: pointers, goto, lambdas and functional programming, C macros, Lisp macros, etc. Using them correctly really helps a lot, using them incorrectly can hurt a lot.

The solution is to learn how to hit the nail with the hammer, not your thumb.