I just published a new switch node as a community package. Switch9000
With this new node you can easily add more than 4 output to a switch node. It does need one sender and multiple receivers to filter routes, but the functionality is exactly the same as the normal switch node.
It is a community node build by the OP of the post. It is available as an npm package here. You can read more about community nodes on the n8n community nodes page