What is needed for warfare today is longer range rockets with more variety in their reactions. to get longer range rockets, we need to make sure that the aerodynamics are right, and, the fuel is enough. this of course means a bigger rocket, yes? then we can put all the fuel into it it needs to travel.
The problem with rockets of today is that they divert direction due to not having 'wings.' this means that they need these guiding wings, yet, to make them cheaper, they need no guidance. we need to guide them without the digital junk that makes them so expensive, of course. the 'guidance' could be made with adjustable wings, that give less resistance for long range reach, or, more resistance for better aim, of course.
If there was a need for better range and better aim, then they could use a 'sticky' bomb first. this could be like a laser that charges the target with a electrical charge, then, the rocket is fired towards the target, finding the target much better, of course. this would be like a digital heat seeking guidance system, yet much cheaper.