From grepolis devblog roadmap:For the record, engame revamps are not DNS.
However, many people have come up with ideas regarding what the endgame should look like, so some get closed for being duplicates or just very similar.
That being said, and I hate to burst your bubbles, but I don't anticipate any of these ideas passing anytime soon when a WW revamp has already been announced last year. This means that they are already changing this in some way, and I would be shocked if they changed it again soon after.
"World Wonder Revamp
Finally! Right? We know a lot of players have been waiting for this to happen and personally, we are also eagerly waiting for a change concerning the World Wonders. We still don’t have a final decision, not to mention a concept. Maybe we will remove the World Wonders and introduce a completely new late-game feature to incentivize battles. Maybe some tweaks and changes to the existing World Wonders are enough… only Zeus knows!"
If they have not finalized the way they are going to change it, I guess they are open to ideas. Threads like these will give them ideas and they may implement a mix of a few ideas...