Not really a fantasy . . . but how about a day in the shoes of the other 8 non-intellectual MBTIs.
Though I would like to Win a GOLD for my Country at the Olympics and then come back to a society where people actually acknowledge my achievement and always treat me with happiness. In context of what happens when you go after your dreams.
A zillion things went through my mind, but, the holo-scenario that I think I would enjoy most is a fantastically equipped mad-scientist laboratory where I had unlimited computing, communication, material/substance, and reference resources and could test theories and conduct any wild, crazy experiments that I could conceive of and never really kill, destroy or blow anything up. I don't really need a holodeck for its entertainment factor. I'm not on a ship far out in space. I already have sufficient entertainment options for my modest needs. I just need to understand.