@wilsonab
Firstly, I think the comment was taken out of context. 6.9 SP4 is the latest one available that is stand alone and not the last and final.
And Secondly, I can't speak for everyone, but I believe most of us are of the opinion that there is decreased functionality with the 7.x releases over the 6.9. I'm not saying that the new features aren't great, I am saying that it's not where it needs to be for the majority of us to switch. I know I had read that a lot of the functionality that was lost from 6.9 to 7.x is expected to be re-introduced further down the line (which I believe a lot of us are eagerly anticipating.
And finally, it is more than a change. The functionality is not all there as has even been said by some Symantec employees (on and off the forums). I am looking forward to future releases of DS 7.x as I do agree it has a lot of potential. I also believe you said it right when you said "NS/SMP will outweigh any perceived limitations". The key word is "WILL" meaning in the future. This is also probably a big reason why Symantec has not stated any EOL on 6.9. I think Symantec understands that they had a great product with 6.9 and 7.x is just not there yet.