Thanks for responding so quickly!
I've actually tried those 3 mods before and althrough they are pretty cool (Stormwalls is my favorite too). I was kinda hoping for something that doesn't require advanced materials to make but gives you the convenience of not having to run around repairing things whenever a spitter gets 2 or 3 hits in before turrets take it out.
So far your Turret Shields are functionally perfect for this, I just think it's a bit of a shame that this makes walls obsolete as I really like the way a base looks surrounded by walls.
I guess the way I'm imagining it is a research that you can unlock with only red and green packs that either gives standard walls a slow health regeneration or lets you make a more expensive wall that regenerates without needing advanced materials to create.