I still use Anwig Salade and Desultor Tassets as slot-in situational pieces on my PUP. I still wear Mirke Wardecors as /lockstyle body for stylishness.
The add-on mission storyline plots and NPCs / villains are awesome.
The final mission fights were thrilling at 75, it was a lot of fun and challenging too.
In any case, those three mini-expansions are part of the rich tapestry of Vana'diel now, they are part of the world we know.
New players can still experience those missions, enjoy the cutscenes, and they always have the option of fighting the last bosses in level 99.0 gear without ilvl, if they want to experience some challenge thrills. Its easy, you just unequip the ilvl stuff and equip some lvl 99.0 gear, and the content is no longer a pushover, infact it is ferocious.
So I'm really happy those three add-ons still exist, and people can go play them when they want to. There's thousands of new ilvl gear pieces you can use, so there's really no need for more. The three add-ons offer some really awesome Cut-Scenes, unforgettable NPC characters, and some nice slot-in macro pieces and /lockstyle fashion pieces.