It actually has:
https://bulbapedia.bulbagarden.net/wiki/List_of_local_Korean_event_Pokémon_distributions_in_Generation_V#Seung_Heon.27s_Cresselia
As for mine, I won't bother putting them in any particular order, but...
All shiny mythicals, including those that have already had events. Something not too common (like NA wifis/Gamestop codes), but not impossibly rare either.
The other shiny Tapus
AZ Floette
A redistribution of V-Create/Glaciate/Bolt Strike/Blue Flare Victini
Things with cool exclusive moves. For example:
V-Create Arcanine
V-Create Flareon
Boomburst/Earth Power/Flamethrower/Follow Me Sylveon
Anything else that would be relatively good competitively
A set of shiny Kyogre, shiny Groudon, and shiny Rayquaza, with their primal/mega items/move. I was expecting them to do that in gen 6 since they were all black shinies, but nope.
Any Absol event. It's one of the only Pokemon that got a mega evo in gen 6 that did not get a gen 6 event. Totally unfair.
Other events of my favorites that haven't had events yet, or haven't in awhile: Luxray, Lycanroc-midday, Alola Ninetales, regular and/or shiny Ninetales, Bayleef, Quilava, Growlithe, Vulpix, Castform, Shinx, Minccino, Talonflame, Silvally, shiny Minior
Paras. Specifically, Worlds Paras.