Customizing default plugin workflows

[petmycat]

First of all, amazing work! Thank you for creating this.
I have a question about customization though. It appears that to integrate this plugin with an existing comfy environment, one has to download some required nodes and models, but I was wondering if I can make my own replacements? For example, a number of required models are inpaint/upscale models, and at least one checkpoint sd 1.5 or xl is required, but what if I want to use flux as the base model and have everything work around flux? In that case the checkpoint will be flux, inpaint will use another controlnet flux inpaint, upscale will use a flux controlnet upscale, etc. I hope this makes sense, I'm talking about a different concept than just a customized workflow (as the one mentioned in the wiki).
So what and where are the default workflows used in this plugin? What parts of the code needs to be changed? I'm looking it through but would really appreciate if you could give me some pointers.

[Acly]

Flux is mostly there: #1176
Workflows are generated in workflow.py - the complexity isn't really manageable with just some workflow files. But if you know Comfy and Python it should be readable.