My favorite events from FFXI were small group instanced content: Nyzul Isle and other assaults, Salvage, Limbus and mission fights. So bring on the quality instanced content. I also liked small group popped NMs, and it is nice seeing these in an overworld setting. I would be happy if endgame were made up of diverse, challenging instances and popped NMs designed for small groups (8 people max).
I don't care for large group events. More than a party or two usually descends into mob tactics. I don't get the appeal.
Other than popped NMs, what endgame, non-instanced PvE content do you want? I guess there are people who like to camp NM spawns and fight for claims. Playing the rare drop lottery and cock blocking others isn't fun for me. If this kind of content is in the game, that's fine with me, but if it's not and that drives people away, that won't bother me either.