Just a simple idea and request. If PE does incorporate riddles, specific verbal tests or major side quests requiring investigation and deduction, can we please avoid having the answers handed on a platter via multiple choice answers?
I believe there were some great riddles in Planescape Torment (Undead Nation) if I remember correctly and in Baldur Gate series. I would prefer if it was a subjective test (i.e. fill in the blanks style). One fine example was the final test in Ultima IV when you came to face the Codex of Ultimate Wisdom.
The reason for this is that I really hate when a good riddle goes to waste. When you have an ingeniously crafted riddle, it just goes to waste when you are given the answers in a silver platter of A, B, C, D, E. It would be better if you were required to TYPE in your answer.
For a really good investigation and detective side quests, it would be great if the PC can sidestep some preliminary investigation if he's good enough to deduce certain major points and can query the NPCs directly on a certain point. Granted, this should only be used sparingly.