Re: ElasticBeanstalk - it's just a feeling, and hopefully not correct - it just doesn't feel like it's one of their primary focuses, and seems suspiciously stable overall. There's nothing I particular want them to add, though, so maybe it's "perfect".

I love it, though - it's been a great boon for our small team - allowing for a painless hands-off deployment strategy that's worked great (largely unchanged) for almost a decade.