Evolving Mecha Anime?

[ultraklon]

I'm new in this forum and ignorant about anime stuff. But I was wondering this:

In many Mecha animes, the bad guys just keep sending robot after robot, to try to beat the good one, at least in the old animes.

A more realistic approach would be if the enemies keep sending one or two types of robots that keep iterating over what defeated their previous version, right?

For example an to show how old I am, let's say Mazinger beats Garada K7 with a punch that it couldn't avoid, they should just create Garada K8 or Garada K7 v2 that will have better punch detection or faster movements or anti-punch defenses. Then that'd be defeated using an EMP, then Garada K7 v3 would have better EMP armor.

I mean, why just reengineer everything if you can just improve it.

Is there any anime I should watch with a similar concept, like the "bad guys" being really smart and thoughtful, instead of just trying and trying with inconsistent alternatives?

 

Thank you for your attention!