You think it might make life too easy? But it's similar in some Sid Meier games where you can see the outcome of a battle (or the odds) before committing. Besides which, the dictionary is patchy and unpredictable, so I use it on most moves anyway, to strategize around its arbitrary subset of English.
We have been on the fence about this (and still are!). One option is to add this kind of UI in a "tutor" mode that starts on, and can be opt-out at some point. Not sold on it yet, but mulling it over.
You're probably reading this whole thread, but in case you didn't see an idea I had elsewhere: I like the "tutor mode" idea, and think it would be nice for it to highlight all the currently-valid words (maybe toggle-able).
