Like last season with the LOA, the writers have not done a good job telling us much about H.I.V.E until it is too late (that is if they do tell us more about them in the last few episodes like they did with the LOA, which I assume they will). Damien Darhk is awesome IMO (and I am sure that a lot of people will agree, even if his plans and motives are not so clear right now), but overall H.I.V.E were better in the comics than they have been on Arrow (so far). I was much more interested in them and finding out more about them. On Arrow, the only characters I am interested in are Darhk and his partner that will show up, who we supposedly will be surprised that they can use (my guess is that it is Talia).
There have been nods to H.I.V.E from the comics on the show. Them trying to poison the water by destroying the factory in episode 2 of this season. That was a nod to "Operation Waterworks", which was H.I.V.E's plan to hold the world to ransom in the Teen Titans comics by threatening to poison the water. Using the algae to make poison in episode 9 was probably another reference to that.
The way the Ghosts kill themselves so they cannot be questioned is a reference to the way the higher ranking members of H.I.V.E were killed by the leader of H.I.V.E, who then killed herself before being confronted and interrogated by the Teen Titans.
The way they hire killers and assassins like Anarky, Deadshot and Jeremy Tell. In the comics they have hired the likes of Deathstroke and his son Grant Wilson, amongst others.
The way they had trapped the TA member in episode 9 was similar to how the Titans were trapped in The Judas Contract.
The SPECTRE like base which we seen earlier in the season with Darhk, Ruve and Malcolm talking to various members from around the world. H.I.V.E's bases in the comics, both the one in the mountains and their undersea one were similar, and leaders spoke to members from around the world on similar screens. H.I.V.E in the comics were based on SPECTRE.
Then there is also of course, Darhk, who is involved with H.I.V.E like he was in the comics. He was not the leader or as high ranking a member though. I mentioned that H.I.V.E in the comics were better, but one thing Arrow has done better is make its leader (or at least its co-leader) better. Damien is much better than the H.I.V.E Mistress, who was a very underwhelming villain. When the Titans finally took down H.I.V.E, she was revealed as the leader, but she had just recently become the leader by killing her husband who was the former leader. From what was described in the comics, her husband was a much better leader and she was an incompetent one. I still do not know why they decided to have her as the final villain in that story. Like I said, very underwhelming.
I wonder will they reference the comics again by having the leader Darhk, killed by a high ranking female member who will then take full control. Perhaps his wife Ruve, or Talia, if she is the rumoured character to appear.