Thanks for the suggestion... blast dialing will only be good when inviting people into a conference, the problem is that the phonebook itself does not know if you have a conference selected as a target or not (and it is quite complicated to find out). So the blast dial should be conditional to a conference, because it makes no sense to dial 10 numbers to your own extension, the 1st or 2nd one will work, and the rest will probably go to voicemail.
One of my planned (not really plannel, but at least though), is to improve conference handling a bit. Including perhaps support for dynamic conferences, etc. Perhaps a special conference module for fop2, the blast dialing would be a perfect fit for that module. But right now is just a though , not really a planned feature/module.