[Suggestion] Elite Mark Spawn Invulnerability

[Nicobo]

...Once an Elite Mark spawns have it be invulnerable to all damage and unable to aggro for 5 minutes. 5 minutes is plenty of time to have everyone call upon their Linkshells to get to the Elite Mark without having to fear that Elite Mark will be pulled, and worse, killed before they reach it.

Above suggest was not enough, how about if someone know it after 3min?
So to enhance above suggestion, simply just turn the mark into a green-name NPC by engaging, and it will stay there for n minutes, meanwhile a system message with <t> <pos> would be boradcasted to entire server. ^^;