"This is how I can see certain World Rugby representatives, in whose minds this idea was born. This is absolutely unacceptable for anyone," he said.
Georgia are currently 12th in the World Rugby rankings, three places ahead of USA who are set to join the Rugby Championship in the proposal.
"We were aware that some changes were about to happen and were ready to accept these changes, though not in their present shape, which cuts off all possibility of development and is more likely to lead rugby toward darkness," Svanidze added.
Svanidze says within the next week they will look to make a statement alongside other tier-2 nations against the concept.
"I'm sure we will be supported by a certain group of Tier 1 countries, who think progressively, differently from what we all recently found out," he said.