I just don't like certain things about the boss system in game, would list some things that could be fun improvements, but since this is the forums only not worth my investment of time getting into atm.
Hitting head against the same wall for or wow hours at the same time of the boss fight for example, knowing the problem and how to counter it but just because the numbers don't work, or 1 noob keeps messing up. Stuff like that really comes down to luck for avg player base. The odds of somebody messing up, then get the stars to align on numbers, (too many freaking numbers).