I'd hate to see Munoz leave as he brings so much positive energy to the team, as well as goals.
As for JP .. I was going to say he's not the player he was, but in fact he is the player he was - i.e. in the days of Roy and Viera. However, the arrival of Glasner seemed to have transformed him into a sharp and potent striker. But, this season, that composure and confidence in front of goal seems to have deserted him. Perhaps it will come back, but with a midfield that doesn't contribute goals we cant afford to have our main striker mis-firing as well. However, even with his current malaise, I wouldn't let him go unless we have decent replacement lined up.