You are looking to use robots, but the return on investment does not seem to be high enough to make this profitable, considering the high quantity of different products that you make? With the current approach, the biggest obstacles are the dedicated tooling that you need to make for each different assembly or weldment and the cost of programming. You could amortize the robot costs over the complete volume of production. But for the tooling, you must get the payback just on a single product, which is difficult. What if you had programmable tooling?