did you overlook that you need up to 10 things in GE ?
so if you really expect a 4th turn in GBG you should also expect more things to offer
because it is simple math
in GE with 4 turns at the end of level 4 you still have a lower chance to be successful than with 3 turns in GBG
so can you please answer me:
do you want 3 turns with 4-6 different goods
or 4 turns with 8-10 different goods to offer
and even with both at the same winning chance at the end you would always chose the 3 turns because
a) it costs less goods in total
b) it needs less time to negotiate
or just one of the aspects of the game we have to accept no matter how annoying?
and
we don't need to accept it
we can simply fight