I think one nice fruit that I'm not growing but could perform in my place is santol.
Then there are some brazilian fruit, which are reported to be great, but I'm not growing. Jaboticaba is my only Myrciaria and so far no fruits (so far it does not grow too much. I thinks it needs more water and humididy).
Rambutan, pulasan, durian, mangosteen are mission imposible aver here..
BTW, I think maprang is overrated in this forum; it's like a mago-flavoured plum, inferior to a decent mango.