As you've possibly noticed that whilst buildtasks is public and quite usable; it's primarily for our internal usage. Having said that though if we can make it more flexible and more useful for users then (at least in theory) I'm all for it! :)

So, to rephrase myself: if you can extend buildtasks' flexibility without significantly altering it's current functionality I don't see any issue with that. I'd need to defer to Alon for final approval though (I don't have write privileges to buildtasks). So if it's not too much effort then perhaps do a PR. Then I'll have a quick look over it and and then get Alon to also have a look at it and give you some feedback. How does that sound?