The whole point of signal is that it's secure and has reasonable UX. As soon as you can start choosing security parameters it becomes unnecessarily complicated for the average person with added scope to mess something up
Well the question is is there an even easier signal that is some reasonable mix of secure and reasonable UX? There are important features that Signal has left out (not requiring a phone number to sign up being the most egregious) -- the question I'm asking is whether there is another point in that space of tradeoffs.