Did you save Wrex, maelons data, and cure the genophage using paragon resulting in a future for the krogan where they rebuild peacefully and co-exist with the rest of the galaxy? Or did you kill Wrex, destroy the data, and cure the genophage resulting in a disasterous renegade outcome where it is clearly shown that Wreav will exact war and revenge on everyone who wronged the Krogan? Extended cut shows these vastly different outcomes.
Meaningful and immediate post game consequences as a result of your decisions across 3 games: check.
Did you prevent Tali from being exiled, rewrite the heretics, and choose to save admiral Koris on rannoch? Then you'll get a distinctly choice driven ending in which the geth and Quarians are alive and cooperating. Alternatively your poor decisions force you to choose to genocide either race and get an ending where an entire race is very much dead.
Meaningful and immediate post game consequences as a result of your decisions spanning 2 games: check.
More choice and impact than Dragon Age has ever had.
This is strange considering that I prefer Mass Effect, but I honestly find the stuff with
Iron Bull in Trespasser
But that's because I'm a heartless bastard who never really liked the Geth or the Quarians.
The Krogan stuff mostly just plays out in the ending.