Hi Bobgone, if you want a setting to apply to all outfits, use the right-most panel under Generation settings. If you want tags that only apply to a single outfit, regenerate using the button below the archway. If you want a setting to only apply to a generation/specific CG, click on the expression/CG. There shouldn't be anything impossible to do in the current system, you have access to all tags sent to the backend on the regenerate panel.
The 1st generation tags are decided by the LLM, so unfortunately you just have to tank the 1st gen sometimes. You can create a blank character to start from scratch by checking "Skip LLM Call"
Let me know if there's anything else I can clarify, I didn't exactly know what you meant by some things so if I missed something feel free to follow up