The unworkable part is what is alluring to so many. If Congress is stuck in perennial mire, they can’t screw us over by enacting more horrid legislation. But as I stated, that would then legitimize the President ruling via fiat (pen & phone/executive order) to bypass and enact their own agenda unilaterally.
If folks want to see what a mega-Congress would look like, take a gander at the Senate in Star Wars. Of course, they voted to break perpetual deadlock by “electing” an Emperor.
Apparently there was some “New Republic” stuff that was cut from the new movie. There was a weird closeup of some chick before she dies, but she was never seen before (horrible editing choice leaving it in then). In a deleted scene she was Leia’s liaison with the Senate.
As I understand basically the Senate was refusing to directly act against the Em...er “First Order”. So yeah, useless bunch of bickering jackholes just the old Senate in the prequels.
Probably the most realistic thing in the movies is how this Galactic Superstate with it’s a huge legislature is unable to function, even to protect itself.