I really hope they take the time to develop the characters but i don't really follow all the wild speculation that a lot of the fandom spits.
i was thinking about amon surviving the blast but i heard from others that it was established that he definitely died (not that i held much hope of him returning)
with the arrival of bumi / general iroh v2 but the war against amon over (i have low hopes for any no. 2 coming to the surface due to the defacing of amon) i figure some sort of adventure arc will surface, and that's exactly what we need. some time to develop characters and relationships.
plotwise avatar has always been effortless in execution and i really hope my faith is not misplaced in this department.
i hope you've read the promise pt. 1 and pt. 2 because those are some faithful continuations if i ever saw one