About raids/dungeons end game content. ( devs hope see that ) :) :)

[Urthdigger]

first of all i hope if its possible as i saw ( the raid goes like 8 men ) if its possible to goes 15 -20 men raid , with modes , like normal , heroic , mythic ( as in wow )

There actually is 24-man content! There was Crystal Tower back in the level 50 era, and Void Ark in Heavensward. There's also the PVP mode of Frontlines which supports up to 24 people PER TEAM, for a total of 72 players.