I would absolutely love a re-release of 6399, and I sure hope you're on to something there, Klaus-Dieter. I own five 6399 sets (the first I bought – or rather, my parents bought it for me – when it came out in 1990; the second I got two or three years ago on eBay for about 120 Euros – which isn't that bad if you consider some 6399 sets selling for about $ 1,000 on eBay which I have seen myself, believe it or not; the other three followed subsequently). But I would happily buy two or three more sets if they were to be re-released, for expansion purposes, especially if TLG would also re-release the additional track expansion set 6347 which includes points. If you think about it, this would be a huge source of income for TLG: If you look on eBay and see a 6399 offer every now and then and look at the prices what they sell for, you can clearly see that people are willing (maybe not completely happy but willing nevertheless) to pay the big bucks for such a set. So why not make it a Lego Legend like they did a few years ago with the 4558 Metroliner which was re-released as 10001? Why not make it an official re-release by TLG and selling it for a reasonable (i.e. less than people pay on eBay) price, maybe $120-150 – then the money would go directly to TLG, instead of paying $ 400-900 to a private seller?
Personally, I'd rather have a re-release of 6399 than a completely different version of a similar concept. Sure, you shouldn't always daydream about the "the olden days" or the Golden Age of Lego, as some would have it. But I think in this case, it has nothing to do with nostalgia only – 6399 was a commercial success, as you can still see today when people are paying insanely high prices just to get their hands on one of these sets. It also fits in perfectly with either an "old" town layout as well as with a "newer" one (in terms of ratio and studs etc.). From a practical point of view, it would be entirely possible to re-release 6399 as a Legend as the molds needed to make the special parts for such a set will most likely still exist – you can see this most clearly when looking at the re-release of 6390 which came out as 10041 Main Street in 2003: In that re-release, they once again used the old original road plates that were used in the original set although in the meantime, i.e. between 1980 and 2003, there had been several other generations of road plates – I believe, four in total. My point is: Once a part or piece has been used in a set, no matter when this set was released, it must be possible to re-use that same piece again, even if the re-release of the original set happens ten, fifteen, or even twenty years later.
So why not having a re-release of 6399 – even with some minor alterations, if absolutely necessary? I know this has been something that AFOLs have often been dreaming and talking about.
I really hope that you are on to something, Klaus-Dieter.