Apologies if there’s a way to do this that I haven’t found yet but I’d like to be able to set a “User Default” patch for each of the main algorithms (2016, Spring etc) that loads when you select that Algorithm. Since you’re not able to write over the Factory ones (which makes sense) it seems like a setup similar to Pro Tools where you can toggle Factory or User defaults would be a great option to have (attached a screenshot for those unfamiliar).
This is a known issue. If you right-click an algorithm in the browser window, the option to create a new default preset will appear. Clicking it creates a new preset, but does not make that new preset the default. I don't have a timeline for the fix yet, but I'll reply again when I do.