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Get sequence number without node creation

I have a feature request I'd like to discuss: How about a call that will
give next sequential node number without node creation. Main reason is
that in many cases this would allow retries without leak on reconnect, e.g.:
1) create(SEQUENTIAL) - disconnect - retry - and you've just leaked a node
Can be
2) incrementCounter() - create(name). And you can make a retry in any
place. The worst thing that can occur is that you will have a hole in
your numbering

Another cases this can help are simple counters (no need to create nodes
at all) or simply different sequential nodes naming schema.

Best regards, Vitalii Tymchyshyn