I see the crux of this post is that they gave a lot of valuable advice to someone who was, at the time, inexperienced. Surely you can acquire sage advice without giving up equity by just hiring someone with experience. And they'd be onboard full-time instead of 15 minutes a quarter. It seems to me the biggest value is the obvious one. That they give you money.

And sorry for opening a political can of worms, but I wouldn't touch anything that touches Andreesen with a 10 foot pole at this point. He's taken a serious heel turn and is openly endorsing Fascism.