My suggestion is to combine the model report screen and all three model design screens like this mockup:
And make it interactive, so you can change the picture of the model, the name, and see what effect your design choices will have on the final model in terms of attack points and such, along with how powerful the engine is considered for the weight it has to move.
Another Suggestion
As it is, you don't really research a lot for this phase of technology in Shadow Empires, currently.
In the real world, there's a big difference in rolling armor plate 5mm/25mm/50mm/100mm thick, for example.
New materials/processes and rolling mills have to be invented. Same thing with engines and guns.
As it is, you can immediately jump forward from militia buggies to something thematically similar to a M41 Walker Bulldog light tank, if you so desired.
