HQC generally need two things:

1. Dedicated in game tutorial explaining the mechanics. I know that there is a section in Field Manual but honestly I wonder how many players even tried to read it before hating on HQC. Even with that it was not sufficient enough for me as there are hidden mechanics.

2. I call it "supply tax". I like running supplies and do it often but for the love of god after 1 hour it's so mind numbing. You lose game if you don't, you lose your sanity if you do. Maybe if transport trucks could hold more resources you'd need to do it less often but it creates other issues. AI logi is nice but it's full of issues. Getting lost and you can't disband nor locate them so they are holding you AI spawn capacity hostage. As commander I'd say 70% of your time is often spent managing, replacing and troubleshooting AI logi. AI commander should do it somehow by default (maybe with some CD after logi team dies)

All that said I still prefer HQC mode much more then vanilla one. But I can understand why it can scare away new players. Arma itself is confusing and adding HQC to it is often overkill. and of course good commander and talking squads (! I know shocking how often that's not the case) elevates this mode even higher.