He intentionally destroyed the Uchiha Clan( Shisui could have stopped it but Danzo stomped it out)
He manipulated a vulnerable Itachi into killing the Uchiha by using Sasuke as blackmail.
He caused Nagato to go crazy by framing Nagato's group and manipulating Hanzo.
Threatened an orphanage.
Betrayed his long time comrade, Hiruzen, by trying to have him assainated.
Ordered Orochimaru to conduct experiments on little children.
He didn't lift a finger while hundreds of Konoha Shinobi were being killed by Pain.
What else?
No, he's just an antivillain. A villain with good intentions. He always wanted to protect Konoha, the bad thing is that he only wanted it to be done his way. Oro, Kakazu, Hidan, etc are more evil than Danzo.
You did exagerrate some things...
1. No. He was just insanely paranoid and didn't know if he could trust Shisui. (Which was pretty stupid in retrospect, considering that Shisui was quite trustworthy and had gone on numerous missions for Hiruzen before).
2. Itachi was never manipulated. The Uchiha clan dying at that point was inevitable and Danzo was actually being straight with Itachi right there. Negotiations failed. The Uchiha would not win the coup w/o Shisui and Itachi helping them. Whether Danzo ordered it or not, the Root, Anbu and other clans would join in for the resulting conflict and a civil war would start, and all the Uchiha would be eliminated. Then Konoha would be invaded due to being weakened and another shinobi war would start. At this point, the Uchiha clan was going out either way. Itachi had two choices, he had options. The problem is that both options sucked and there was no way to save the clan.
The real problem here is back at option 1. The fact that Danzo stopped the last thing that could have prevented the Uchiha from dying, the KA shot.
3. That was filler, not canon.
4. Yeah, he did so that Nono would do what he said. That was pretty harsh though.
5. Once again, filler. That's not canon. That and considering that Hiruzen kept him in office and just brushed if off in that ep, it looks even worse on his part.
6. More filler.
7. Did he stand a chance against Pain? Did anyone in that village bar Naruto stand a chance against Pain? No. Danzo would have just gotten fodderized. It wouldn't have helped.
ot: But yeah, overall Danzo was a scumbag and a villain. I wouldn't put him on the level of Oro or Hidan though.