It just seems like everyone is re-inventing the tech of the 50s and 60s, but at a fraction of the cost by using a completely different set of parts, supply chains and cost structures. And massive eventual volumes.

My guess is the Ukrainians will put a rocket on their interceptor drones, and develop some sort of radar or heat seeking guidance system. Perhaps we'll end up with an interesting hybrid interceptor missile that uses electric propulsion for part of the journey?