It is nitpicking.
As it depends on the national parliament if it has the right to do that.
The German parliament does not have that right, oops.
However a "faction" in the parliament does have that right.
No idea bout other European parliaments.
The Commission has no obligation to be forthcoming.
Depends how nitpicking you want to be.
This is really a severe limit on the power of the European Parliament.
Depends how nitpicking you want to be. The parliament can retire every commissioner or the whole commission, if they vote so.
Basically out of a blue sky.
Sorry, why argue about something that is not important to you - and you have no clue about?