Given that these are newer:

>What was your favorite aspect of the Lisp machines?

Tagged memory architecture makes typechecking a free operation.

>Do you think we'll ever get something similar to the LispMs again?

Maybe, but probably not.

The best bet is from some clever hobbyist like Stanislav.

>What is your preferred method of documenting your code?

Pic related

>In the dialects that allow it, do you make many reader macros or not?

Not really, but that's just because I don't know much about them.