Different levels in structures

Sometimes as you see more of the same structures in your Minecraft world it just gets boring, but an idea I have is to make variations of that same structure that have different levels of difficulty. That way players would not get bored of the same structure all over again. When I say levels of difficulty I mean that amount of mobs, the strength of mobs, and the type of mobs in that structure. There can be level 1 to level 5 structures with different mobs. An example of this idea is a comparison between a level 2 pillager outpost and a level 5 pillager outpost at the top. Maybe the early design of the pillager can come back in some certain levels of outposts.