I love using CRT shaders on a game by game basis. As others commented, if it’s more detailed artwork, I’ll flip it on. Other times I don’t like how it looks with some classic games.
The only mod I do want is a way to replicate, on a modern monitor, the feeling of turning it off and putting your arm against the screen to get that sweet sweet static discharge that only CRTs could give you.
Edit: Removed my joke at the end of my original comment.
To slams, you say?