Quote:
What is it that you don't like in the opening?
Like I said: too hard / modern for weak players, not good enough for strong players.
Quote:
Veteran players who have played some similar openings in the past, like KI, benoni and no longer wish to spend oceans of time preparing these openings.
Fair enough. I always recommend that students fully learn their opening. I think it takes much less time to learn a narrow repertoire than people think, and I don't really find much of an excuse for being unprepared.
If you've played the King's Indian / Benoni and are looking for a lower maintenance option, you could do worse than the Old Indian. Still, I would just recommend the King's Indian. There is a whole lot of theory in the King's Indian to learn in order to stay right at the cutting edge, but you can learn enough to play the line pretty easily (and you needn't really refresh it).
You only really need to be state of the art above master strength (and you need to spend time preparing your openings then).
Quote:
Why do you restrict real responses to 1. d4 to just the KID/NID?? What about the slav, semi-slav, various QGD's, Gruenfeld, etc, etc??
I always recommend the King's Indian or the Nimzo-Indian to serious players developing their first real response to d4. These are the two most common high level responses to d4, and if you are going to be a strong chess player you should understand them.
I recommend attacking players learn the King's Indian and positional players learn the Nimzo. I tend to pair the King's Indian with the Sveshnikov and the Nimzo with the Najdorf.
Over time, and based on the students results, I recommend changes. I recommend QGD's below 1800 more or less exclusively, and occasionally return to it if the student struggles with Indian defenses. The Gruenfeld I usually recommend to players who are struggling with certain parts of the King's Indian.
I play the Slav in tournament chess but I have never had a student strong enough to recommend it to. The Slav is either too boring (the quiet lines) or too theoretical (the main lines) for my students.