Since you complaint about them being unoriginal by adding a jump puzzle, I took the liberty to look at your ideas...

Quote Originally Posted by Pyroxene View Post
Theres plenty of ideas floating around. How about remembering eorzea, Finding certain npcs that were pivotal to you starting out
Sounds a bit like that optional quest at the end of HW that sended you back to talk to a few NPCs that you met during HWs... I also kinda remember a lot of reminiscent quests of one kind or the other... Both as events and as normal quests aswell.

Quote Originally Posted by Pyroxene View Post
, or side story of a few npc adventurers youve met along the way. Maybe training new adventurers in fates
Sounds a bit like Squads to me... or doing FATEs with your chocobo.

Quote Originally Posted by Pyroxene View Post
get some more of that active time function goin on.
Are we talking about mashing one button in content like Susano and Shinryu or about those "aim at this"-minigame? In the later case: There are so many quests, even repetable ones, that use that feature now... also: last years summer-event made use of it aswell, in the form of, ehm, keeping watch at the beach.


Quote Originally Posted by Pyroxene View Post
Something that requires the player to think, or something that just shows they put more than 5minutes thought into it.
How does any of what you suggested requires the player to really think?
Its supposed to be a fun, little event, not re-invent the game - and I take anything over FATEs (even if done with NPCs) every day.
For some of your suggestions I honestly cant even say how they fit the general idea/spirit of the event - its a beach party at Costa del Sol, why would we wander around Eorzea to remember our old battles or comrades? Why would we be at the beach in swimwear to train new adventures (unless we're training them in staying away from that lalafell and how to consume lots and lots of booze)?