[progolferyo]

How about more control over the software & configuration side of ELB as well? If you could control more things that nginx or haproxy let you control, I think there would be a lot less need for another routing mechanism behind ELB.

In addition to weighting, we need an nginx layer for different app pools, custom routing options, max connections limits, request queueing, url rewriting, static content serving for specific requests. The list goes on but these things could easily be brought up into the ELB layer.