[thxbb12]

Also, the implementation of a full electronic shutter raises the noise floor and lowers the DR.

 

BC, this is incorrect.

Again, this specific issue only affect some mirrorless cameras, not all of them. Olympus and Fuji cameras do not suffer from a decrease in DR.

 

Full electronic shutters get implemented anyway, for two reasons that I know of: to prevent blur caused by the energy of the shutter, especially with IBIS cameras. And to implement silent shooting.
 

 

I'm quite surprised your forgot another very important reason: the ability to shoot at a speed way beyond the mechanical shutter like at 1/32000 for instance (thanks Fuji).

It means one can shoot at f1.2 or f1.4 in bright day light. The only other way to do this would be to use a ND filter which is an annoyance, especially when you don't want to mess around when the family is waiting.

 

Again, rolling shutter is rarely an issue, unless one shoots fast action.