Very interested to see what you guys come up with. Sounds like you want to offer all the same products that most of us already have, though I know there is still a huge market out there for you on the n54 w/ those BPU products.
I'm much more interested to see what you come up with in regards to exhaust manifolds, turbo upgrades (single or twin), and fueling upgrades.
If you focus your efforts on the not yet available goodies, I think you can leapfrog many of the current tuners........just my opinion. Produce the easy stuff once you have the hard stuff already developed.