I gotta agree with PDF here, we've all got a great opportunity here to have a discussion with the mod/admin team of this community concerning how to handle things like this going forward.
Let's get past the perceived injustices and hurt feelings and try to offer something constructive about what guidelines should be used when dealing with topics/subjects that have been dicussed previously.
@Mods/Admins: I do think that it's a great idea to have a dialogue on this issue.
Obviously with retro gaming riding a wave of popularity, our community here has seen some increases in numbers notwithstanding that with all hobbies you will have people who will naturally come and go as interests/priorities change.
A quick look at the original top 50 NES project thread shows that many of the posters (not just the op) in that thread aren't that active in the community any more, and that there are very few instances where the same people are participating in the old/new thread.
Part of the problem in reviving/adding to classic discussions is that in many cases, the original post cannot be amended/edited to reflect new/changing views of the community.
In this case, any new discussion would have commenced on page 4 of the original thread, and results/comparisons of new discussions mired within the text of the original thread.
That doesn't lend well to having people participate, nor towards allowing room for new members to weigh in on older discussions in a way which allows their input to be given the same weight when it comes to ranking/adding/removing titles from within the existing list.
At some point, particularly with classic gaming we'll have gotten to the point where anything we discuss will have been discussed before, it's inevitable, as there just aren't new products being released that often to stimulate new discussion...only changing perspectives of existing members, or new input from new memebers, not around during the original discussion.
I think we can find a way to allow for fresh input and ideas without stifling community interest by locking topics.
Heres an idea:
What if we could stay within the spirit of the original discussion/thread and still allow for new ideas/input via something like this.
Let's say a member wants to revive or re-examine a classic discussion or list.
What if we setup a guideline where such topics could be reopened every (insert time frame here).
We could make it fun and DP-centric by requiring some kind of purchase from a DP shop of a token/item costing meseta that could be used to revive a classic discussion.
Upon use of said token, the classic thread or a variant (split) of said topic could be opened within the appropriate board (in this case, Classic Gaming).
The original results of the old discussion could be used as a jumping off point, and new discussion could take place, with results of the new discussion either inserted just under the original discussion (the second post of the thread, for ease of comparison) or the results updated within the first topic/original list of the old discussion.
This would require hands on efforts of the mod team to manipulate/integrate the new discussion with the old, which is why I suggested the use of time buffers and meseta purchases to avoid these discussions being revived every 6 months or so.
Thats just one idea which could be fun, and could be used to integrate new ideas with classic input from the community.
Personally I prefer the new stuff being inserted as second post in the original thread rather than modifying the original, as many of the original contributors might not be around anymore, and we shouldn't invalidate their work by erasing a snapshot of the DP community from that timeframe.
Sorry about writing a novel here, hopefully it wasn't too cumbersome to get through.