Once per hour would be pretty useless for nodes from what I can see. I mean, that is enough for 5-8 tries per node at best, and at the cost per node would take you months or years to make up through whatever you harvested from it. I disagree on the abuse though, since it means the RMT are in a place that SE could easily recognize as abusive behavior by what they're doing.

On the other hand, if you mean you can make say, the points all pop up and be an hour cooldown between uses, I could see that as more practical. Each node lasts for about an hour anyways, so that means you could gather for an hour and then wait an hour to gather again, which seems much more fair. Of course, there might not be any abuse, and in that case SE might decide to remove the cooldown period at a later date.