MCU: What The Netflix Shows MUST Do If Resurrected
6. Bring Back The Defenders (Eventually)
Most did not find Defenders to be massively enjoyable. Nevertheless, the series had a great concept and cast of characters, meaning that a second season would not go amiss.
For Luke Cage and Iron Fist, another season of their own shows would be needed to bring those heroes back to a point where it would be appropriate for them to have another team-up, but that shouldn't rule out the possibility of another Defenders story at some point in the future.
If the series does eventually receive another outing, then the main priority should be to procure a stronger antagonist, preferably one that does not have access to an army of identical ninjas. There are plenty of villains that fit this particular bill, so that shouldn't be an issue - so long as Marvel continue recent trends and find a worthy adversary for the series.