I'd suggest you to read this LL http://forum.square-enix.com/ffxiv/t...808-11-2014%29 and the one before the hunt came out to understand why they don't want to make it easier for the whole server to be there for each mark kill.

The hunts were originally designed to be content for small groups, as surprising as it looks, they were designed to deny all other players on the world from getting reward from every single mark out there.

All of this was designed in a way so the majority will miss seals, your idea is the complete opposite of what they originally intended to do.