Originally Posted by usagicassidy
WATXM and the latter half of Evolution all were constantly creating threads, putting things in motion, building to events and stories. Much like Avengers EMH did. Now we get a piss poor version in its place called Avengers Assemble and is much like XTAS and BTAS in that episodes are pretty self contained.
That was only possible because XTAS in its first season, and Spider-Man during the same era, took the superhero show away from single-episode one-and-done formats and changed them into season-long plot threads. The first season of XTAS keeps building upon the Sentinel threat seen in the first episode. And many of them start where the previous one left off without technically being a "Part 2."