This will make member EWG very happy for sure. He really likes it when you release early war stuff.
You asked for comments, so here is mine. I am a little surprised that you did not start with the Sdkfz 10 half-track kit first before the Krupp Protze 70. I'm not complaining!! I want the Krupp Protze 69/70 too, but looking at this from a marketing perspective there is a lot of interest for the Sdkfz 10 in a plastic kit. Not only is the Sdkfz 10 half-track also an early war vehicle like the Krupp Protze 70, but also a mid war and late war vehicle - being produced and used from 1938 to 1945. More importantly, with a basic plastic kit of the SdKfz 10, the gamer/modeler and you, Rubicon Models, has more options to make early, mid, and late war variants and other SdKfz 10 field modifications.
Don't get me wrong, something like the Krupp Protze Kfz.69/70 will look great and be of interest to many gamers/modelers, but from a gaming point of view the Krupp Protze is really only an early-war vehicle. Also, the SdKfz 10 Half-track was far more common, and if I had to choose only one between the Krupp Protze 69/70 and the Sdkfz 10 for production, the better choice I would think would be the SdKfz 10 Hal-ftrack. To bad because the Krupp Protze has a really interesting look and design, so why limit yourself?! Why not release both the Krupp Protze 70 and the Sdkfz 10 half-track? The Sdkfz 10 half-track would probably sell better, but I'm pretty confident that both kits will be good sellers for you, Rubicon Models.
Conclusion is that from a gaming point of view the Krupp Protze 69/70 is really only an early-war vehicle while the Sdkfz 10 half-track is also an early war vehicle, but also a mid war and late war vehicle. However, both would make great additions to the Rubicon Models line of 1:56 (28mm) scale plastic kits!
Now that I have made my comments, I can now say I'm very excited to see you, Rubicon Models, releasing a 1:56 (28mm) scale Krupp Protze 69/70 plastic model kit. I know I will be ordering a couple of these for sure! My dream would be to also order several the Sdkfz 10 half-track as well.