An API would be great for us since it would let us to run our tests against all web browsers by making some http requests. Wouldn't it be revolutionary?
As I just mentioned elsewhere this thread already, browserling is rolling out exactly this service really soon! Here's a sneak peak: http://browserling.com:9088/
Hi, why don't you drop an email at support@browserstack.com with your idea as we have some similar ideas cooking up.