Having HK rebuilt is a pain in TSL, since I'd rather just get on with the storyline. HK seemed funnier/better in KOTOR, but in TSL, his only great moments, where taking the mic out of Carth/Bastila and discussions with T3-M4/GO-TO. I remember that my first playthrough of TSL, I forgot to finish rebuilding HK, he's that forgettable in TSL.