Customizing Discobot for your site

So does this mean we can only use %{title} and %{base_url} and that’s it when customising a message? I’m working on personalising my messages and I’d like to be able to address the person by name for example, or display the contents of one of the custom user fields they filled in on sign-up.

Is there a way to do this? Or am I trying to twist Discobot into something it’s not and there is a way to automate a more personalised welcome message to new users where I can display that information?