How many D'habi can you fit into a cab?

And in addition to that, he cost 10 instead of 7, meaning that you have even less chance to put a second copy in play if the first got archoned.

Giotto's awesome special is what makes the deck flow smoothly.

his special is very good, but it works in others people turns. You're playing lot of actions and freakdrives so your problem with hand clogging should be resolved in your turn. Good option for it is learjet (and with nergal you can play magic of the smith for it).
You can as well add Monocle of clarity for some additional anty bounce/ archon protection.

And in addition to that, he cost 10 instead of 7, meaning that you have even less chance to put a second copy in play if the first got archoned.

Nergal can play revelations by itself so you're more or less safe from AI.
Also, being 10 cap is an advantage in this case, you can use enkil cog, which means:
1. additional bleed action
2. full AI protection (your prey can't play out-of-turn master during his turn)
I would as well add 1/2 infernal servitors. It's an additional bleed for 3 if you're playing freakdrives
And one more thing. With nergal you can add heart of the city and pulse of the canaile for the even bigger bleeds.