I did feel like it was the time constraint that must have closed in on you guys - because I saw a lot of cleverness in what you were able to execute!
making the 1v1 more strategic + making it harder to deduce are the straightforward paths that immediately occured to me too. But the idea of unlocking extra developer tools sounds good in terms of progression, and going meta - if done right, can be psychologically rich too!
I am not sure how practical this is - but is there a way where you can give access to manufactured discord chats? That way, looking at the profile is not enough to make a complete deduction, but you need to actually go through the kind of messages they post to come to conclusions? just throwing a very impulsive idea!