It seems that my suggestion didn't rise much interest, at least here in the forums.
I am interested, especially for exotic computers with rare or nonexistent software. The only way is then to type for your self a language listing to run.
Yes, that feature has helped me a lot to adapt BASIC programs made for other computers. In a text editor I can easily change all the CLS into HOME, for example, and make quick running tests as the adaption work goes on.