Here"s the issue with this:
The way the wait time function is checked, it is dependant on a set value to check. If we put multiple wait times (as is currently on Naero's boss, we cannot show cooldown times.
Also, due to the addition of more bosses in the future, and the monetary gains from some, this will most likely increase money output by up to 50% through bosses.
So, unfortunately although you put forward a valid case, this will unlikely happen.