I'm curious about this part, I think you might be on to something.
Do you think it should always have one option and should press 1 whenever there's no other option but to continue?
Also, I think the click support may help improve it along with those and other things I have in mind - thanks for your feedback!
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It does depend on if you're planning to implement mouse support or not, If you are I think it's fine to ditch the keyboard controls & just let everything be clickable using the mouse.
If you still want to use the keyboard controls, maybe try implementing so the options can be selected using arrow keys (imagine a menu system on game consoles). I think it would be less clunky than having to use the number keys!
For options that only has a single option or no option at all, any click/button press should just continue to the next screen.
These are just my suggestions though, feel free to experiment with what you feel is right ;)