I will send a PM to everybody, who was active (more than one msg) in 42 threads since 2014. There will be a notice on cryptopia too. As an exception, I will let the people to swap after the January, 2017, if their old coins were not touched after the block #1990382 and we will have remaining the new coins.
Do you mean you intend to keep any coins that don't get swapped in 2017 for yourself? That could be a big share of all the existing coins. It would be better to burn any left over coins if half of them don't get swapped instead of making yourself a whale.