OK, sorry for the delay. I fell asleep in my recliner.
We have two distinctly different cages being discusssed right now. While the basic kit would only be different a pillar bars for us, its a lot different on the users end.
For instance, when you drop the tube through the dash, there are some sacrifices that have to be made. The ebrake pedal is most certainly in the way on the drivers side. On the passenger side its the fresh air vent. You really can't go shallower into the dash to clear these without then poking the tube back through the lower portions of the dash. The lower mounting point will be on the slanted portion of the foot well leading up to the firewall. This portion of the floor has no structure to it what so ever. That being the case a frame cage tie in at that point, IMO is absolutely necessary. There are some work arounds for the ebrake and vent being discussed but they aren't the most elegant. The vent isn't so bad but the ebrake is cause for concern. There are ways to get around these things but they also have their issues. Still alot of discussion and some designs being crafted so we haven't set anything in stone just yet.
In front of the dash there are the issues of decreased leg room for ingress and egress and ultimately the air vents are blocked. These tube can definitely make contact with your legs in a nasty rollover so again, IMO they would need padding applied. One advantage to this cage is you can set the foot right on top of the rocker support which has a lot of structure. It wouldn't necessarily need to be tied back to the frame.
That's just some of the discussion right now.
The cage will be a b-pillar hoop, halo and a-pillar bars including floor plates designed for each of the two kits, in front and through. From there we will add options to the basic kit.
The first will be done in a standard pickup cab. Then we'll get the basic kit in the blazer followed by the family cage in the blazer and then suburbans and lastly crew cab if their is enough demand for such a thing.
Sweet. Hurry up cuz I need one for my rig!
With everything listed, i hope the first set up ends up with a in front of dash because I want to keep my e brake.
. The point behind this stupid rant of mine is.....wait, I forgot 
. There are just a lot of people out there, in my opinion, that will purchase the "in front of dash" cage because of the simplicity. And there is nothing wrong with that. And in Kert's mind, he is looking at it from a business standpoint of "how can I sell the most products." And to be honest, offering both kits is the right way in my mind. That is the best way to maximize customers. But I will agree....through the dash cages are bad a$$. And who knows, once I see what Kert comes up with, maybe I will change my mind and go that route. All in all, DIY4x rocks 
