I keep trying to generate SVG using LLMS when I feel mermaidjs does not work. There has to be a better option here? I just want slightly more control than merma

I keep trying to generate SVG using LLMS when I feel mermaidjs does not work. There has to be a better option here? I just want slightly more control than mermaidjs sometimes, but it seems its the de-facto default we are stuck with.