AWS ELB for Bitcoin node discovery?
I think your scenario would work if you have a way of broadcasting the ELB address (or preferably CNAME) to known entities across a network. For instance we know from a previous answer "Several host names (such as dnsseed.bluematt.me) are maintained that resolve to a list of IP addresses known to be running nodes." (bitcoin.stackexchange.com/a/3537/44818).