What problem does the so-called "gifted" solve?
Without knowing the exact problem, it is hard to tell whether the solution is working, right?
A problem exists when either:
1. there is a discrepancy between what you want and what you get, or
2. there is an opportunity being missed and something desirable is not being acquired/achieved.
Now, in my little universe, I operate under a few assumptions:
DATA is everywhere
DATA classified becomes INFORMATION
INFORMATION that describes how the world works becomes KNOWLEDGE
KNOWLEDGE helps us make better DECISIONS
DECISIONS precede ACTIONS
In order to transform DATA into DECISIONS, we learn certain SKILLS
So, in my little universe, the ideal education system would be one that increasingly improved a person's ability to turn DATA into DECISIONS and produce people capable of executing appropriate ACTIONS under a variety of common conditions. This means a continuous system of introducing DATA and new SKILLS to transform that DATA appropriately. It has nothing to do with race, religion, or ideology, but has everything to do to with the individuals' current knowledge level, cultural desires and skill-set. In my little universe, each individual would be moved along the line according to their level of interest and ability. (Darned if that doesn't sound a lot like a Montessori school!)
Labels don't count. "Gifted" has absolutely no objective referent; it is only an arbitrary comparison.
Since I see the problem so differently from people who are trying to tweak the current so-called "solution," I have no place in my little universe for evaluationg your alternatives.