[ feature ] add more options to Flux ( from changes during development )

### Feature Idea

Some of my images, from 2 or 3 weeks ago, now look a bit different.

I like both versions, but I'd like to make changes directly on the old ones.

Do you remember any changes that could be worth bring back as an option / node ?

Maybe some changes on model sampling or scheduling ?

### Existing Solutions

If I play around with some values, I can get a similar look, but I can't just get it right.

### Other

_No response_