Yes, different to ICE, Scene Nodes are not an immediate solution, they are a glimps into the future. Don't be fooled by the small number of assets though, the nodes you see are just the tip of the iceberg. On coding level there is another layer of nodes available to programmers and many of the non asset nodes in 23 are actually still assets, but build one level lower. Of course these will not appeal to non developers, but it should make thinks more interesting and easier for plugin developers in the future.