I wouldn't say that. It gave some necessary character development and maturity to Peter Parker/Spider-Man, which is important, as he'll likely be the new centrepiece of the MCU in lieu of Tony Stark/Iron Man. The movie is also not very subtle in it's purpose of wanting to serve as the transition from the previous era to the next, using those characters to represent them, and having Peter practically inherit all of Tony's estate and responsibilities.
MJ is also played by Zendaya, who'll be in the upcomming movie Dune.
I'm not saying the movie didn't try, but it certainly didn't succeed in making me care. Also, given the tensions between Marvel/Disney and Sony, I'm not so sure Spider-Man will be the "centerpiece" of the MCU, if anything it looks increasingly like these Spider-Man movies are more interested in doing their own thing rather than serving a purpose for the MCU as a whole. With that, the MCU is kinda left with no real main character, certainly nothing like what we had with Iron Man and Captain America.