Hey sorry it took me so long to respond. Smack dab in the middle of an EMT course right now. Lots of good input here.
@rockit1: not really a fan of limiters myself except in rare circumstances, I view them in a similar way to auto-tune, if it can be used creatively without detracting, awesome, elsewise I don't touch it. That being said, if you have something up your sleeve with them, I'd love to hear it c: Good to see another sound tech here though. Started sound when I was 10 ish, over a decade ago 0.o
@MetalRenard: yes, it does colour the whole thing, but in some cases that's a good thing. Done lightly it can make things sound warm and happy (within reason). I do agree that it shouldn't be smothered on like nutella though.
As to the rest, I'll definitely try playing with it more on vocals/smaller things as per your suggestions. And any other mastering suggestions are always appreciated. Currently working on rearranging "death waltz" from the ground up, but that may take some time as the notation is absurd.