Point-by-point:

1. Agreed. Let's throw away the phrase about General Intelligence -- it's not needed there.

2. Obviously, if we're measuring one's reality-steering performance we must know the target region (and perhaps some other parameters like planned time expenditure etc.) in advance.

3. The measurement should measure the performance of a rationalist at his/her current level, not taking into account time and resources he/she spent to level up. Measuring 'the speed or efficiency of leveling-up in rationality' is a different measurement.

4. The definitions at the beginning of the original post will do.

5. On one hand, the reality-mapping and reality-steering abilities should work for any activity, no matter whether the performer is hardware-accelerated for that activity or not. On the other hand, we should somehow take this into account -- after all, excelling at things one is not hardware-accelerated for is a good indicator. (If only we could reliably determine who is hardware-accelerated for what).

(Edit: cool, it does numeric lists automatically!)