Last I heard, CF paid for a license of BlueSoliel for every copy they sell. Not to mention how much $$$ they charge for their software - free will always be appealing. I have already written the bluetooth library for another project and it was written from scratch and supports 3x the phones and features that BlueSoliel supports.
The nav engine wont be written from scratch but it will be fully integrated into the framework not just some com reference. Right now the plan is to use navit to keep with the whole 100% free 100% open source theme but the others can be integrated with lesser functionality.
But enjoy CF, enjoying paying the upgrade price to cf3 (i would guess its still at least a year away). I know you have about as many posts on their forums as the developers so I wont try to change your mind