Depends if the limit on parameter count is a 'real' limit, or just a limit based on what current-technology models can effectively use. Back in the 'Google Day

Depends if the limit on parameter count is a 'real' limit, or just a limit based on what current-technology models can effectively use. Back in the 'Google Daydream' days, Google might have found that they didn't get any more image-generation performance by raising the parameter count - but that's just because the technology at the time couldn't effectively utilise more parameters. It's impossible to know what next-gen models might be able to use, but I suspect we will find ways to allow the models to take advantage of even higher parameter counts. Stable diffusion can run on mobile devices, but it's painful and image generation takes a fraction of the time via cloud services.