Currently as it is you cannot change the value of multiple objects at the same tine through the developer console.
I.e. If i add a new column to a table i would have to change the value of an object for that new column, press enter, the data will reload and then i can change the next object. This is specially tedious and time consuming when you have to change several items in the database for debugging porposes.
It’d be much easier if you could just make all the changes to different objects and then apply them in batch.