Rinn, I see your point -- but it only applies if you're only adventuring for a mimic, which is impossible to detect in ASH, and you're not likely to gain meat by adventuring, which is difficult to predict. In short, I like the idea but adding it makes certain situations impossible to automate.
If you have the choice adventure set to grab a mimic, then you want a mimic. Otherwise you're throwing away 5k every time you get that noncombat and you should change that setting to not lose meat; if you don't have 5k, then it's a waste of a turn when you can walk away without using an adventure. Even if you're backfarming for ! potions you still probably want to buy a mimic if it shows up.
I see now that you mentioned the idea of someone gaining meat in the DoD in order to buy a wand. Shouldn't they be in the treasury (or some better zone, but the treasury should always be a reasonable option) to get the meat before going to the DoD? The person that tries to gain meat from the DoD for a wand is going to get the adventure on turn 2 and have it in the queue, making the zone much longer.