First time I did this quest was ofc when it was released and Taris was bugged and would always state it was within 5m all the time, after the fix I went back and the whole thing took me about half a day in total, after that I just opted to pay the million for all alts bar my 15th which for nostalgia I decided to do from scratch 2 days ago to see if there was any change. Including the heroics it took me about 2 hours to get every single part and finish the HK quest, so imo nothing needs nerfing, HK is a privilege to own and should be worth the work you put in OP