Obi-Wan and Yoda didn't stay around for long after the Battle of Endor, appearing only to express that the New Jedi Order is safe in Luke's hand(s). Anakin only stayed around long enough to say goodbyes.
But Luke hung around for very long time in the Legends canon. Long after his death, he kept pestering Cade Skywalker to become a Jedi again.
If he intends to stay conscious in the afterlife, he focuses his entire afterlife existence on Cade alone, when there's so much going on for him to intervene in instead.
Seriously, why does Luke want to hang around for so long anyway? Is he too attached to the corporeal world?