Ditch - you are hard to please, but after some careful thought, I have a solution for your points.
1. Dropped down jump seats in pitch black aircraft are a trip hazard for anyone around them as they cannot be seen.
Carry night vision goggles. As an added bonus you can perv from your hotel window in slip ports.
2. The need to ask someone to move to access safety and medical equipment.
Carry your own personal physicians kit on your belt. Then you can be a travelling paramedic on board.
3. Reduction in the number of seats available for crew, who may need them in a hurry, during turbulence.
Carry your own personal camping chair. That way you can sit anywhere you like. Daytime or nighttime
4. Increased difficulty "managing passengers" out of them when they can plainly see them occupied elsewhere by non crew.
Ban all passengers. Face it cabin crew don't like them anyway!
5. Occupied jumpseats flies in the face of the new policy where we sell exit row seats for a premium.
We can ask the Captain to sell the extra jumpseats to the beneficiaries at a premium. That way nobody is discriminated against. Everyone is ripped off equally. (As an added benefit the captain can use the money to buy crew beers later)
6. It is going to look shabby and unprofessional which I believe isn't the image the company tries to leverage it's premium fares off.
Whats the problem with this - its where we seem to be headed anyway?