More force-sensitives companions.
An converted Sith would be good
Possibility to train a non-Jedi/Sith companion to be a Jedi (like KOTOR 2).
A character with +250 affection will revealed to be force-sensitive and become your padawan.
HK unit.
NOT HK-47. I would hate to see hundreds of HK-47 running around. HK-47 is unique.
I want a HK-60.