Today you cannot do realtime-gets through CloudSolrServer, because it will not route the request to the correct replica (the leader-replica of the shard where the document to be fetched lives according to routing rules)
Doing realtime-gets from clients are important in several scenarios. For example in common optimistic locking scenario. Pseudo-code:
Sorry if the code is not perfect, but I just wrote it directly here - I sure you get the idea.
I would like to enable realtime-get through CloudSolrServer in order to be able to do scenarios as e.g. the one shown above