It’s definitely possible. An exhaustive search would require tapping into the cloud since there are well over 100,000 words that the interface could use, times

It’s definitely possible. An exhaustive search would require tapping into the cloud since there are well over 100,000 words that the interface could use, times 17,000 target words, times the grading operation which is moderately expensive. My guess, though, is that the best starter word is number-dense since numbers show up in the middle of the frequency range, and therefore probably wouldn’t change. However, subsequent guesses would very likely benefit from the broader dictionary.