Modifying enemy spawns in vanilla dungeons?

[voidgenesis]

I am interested to get into skyrim modding and have a concept that is modest in essence but ambitious in scope. When I replay skyrim the thing that annoys me the most is remembering where the enemies are in every dungeon, so as you explore you know there is going to be someone sitting in a chair around the corner etc. It takes all the fun and suspense out of completing quests for me. The simplest solution seems to be to simply move the enemies into new locations and maybe mess with their numbers and levels a little. Nothing game changing, but just enough to keep you on your toes.

 

My question is- can this be done with the current modding tools? I imagine I will be going into the levelled actor lists and changing the locations and patrolling behaviour of all the NPCs. A huge job I understand, but I enjoy getting into a rhythm with this kind of work. Can these original vanilla enemy spawns lists be modified? Can it be done more efficiently by editing the relevant files themselves rather than slower process of dragging of NPC locations around in the creation kit? Could the process be partially automated/randomised to speed it up (then just play through each dungeon to fix any glaring problems).

 

From my perspective the ideal would be to have multiple sets of this mod, so every time you started a new game you could have a fresher experience and never know exactly what was waiting behind every door and corner.