Ok so here I'm think how i could step up to the next level in desgin in both detail and articulation.
The answer is 3D printing.
The results would be highly detailed, prefect articulation, hollow light weight parts.
Cost for 3D drawing, Cost for 3D printing. My guess its £600 or more just for the prototype before casting costs.
The net result;
You get an exceptional professional quality model to play with, but its likely to cost £100+ not matter if its a light or an assault..
Its a big risk for me to take if the math doesn't stack up for me or yourselves. Your thoughts in the comments or on email;