part of the reason you may only have a few names on the list is that we all have different mental images of what this thing will be and look like. When we all look at the different companies for CAIs, we see Injen, K&N, Vibrant, Ractive, E-bay, and true custom one-offs. There are many different setups and many different quality levels and attention to detail, different types of sleeves and even hose clamps.
For a shop to make it, and for people to commit, at a minimum I'd say that drawings would be needed with a very detailed explanation of parts that will be used. Pictures of "off the shelf" parts like cheapo hose clamps versus nicer and more secure fuel line style hoses, and type of silicon couplings would be good. Indications of whether grommets will be included for the air temp sensor, whether there will be brackets included to relocate the overflow resevoir, and how the intake will be supported are all things that are needed. If a shop is serious, I think these things would be easy to provide. If they're not provided, my conclusion is that either the part is not at all well thought out (and probably also poorly executed), or the shop is not serious.
Building a prototype is a necessary expense in today's marketplace, so if they're serious about selling these they should have no problem making a prototype, accepting feedback on it, and going into limited production.
Until I see these things, I'm not in. If I'm satisfied with what I see, I can very well see getting one for my winter intake.
