Too early to call but I don't see the trend changing
Listen to this performance of the Avengers:
https://www.youtube.com/watch?v=TvLxbTb_uF4
The lack of individual characters having a signature score doesn't hurt the movies of the MCU but it sure doesn't allow for the characters to stand out, or stand head and shoulders above, or even with other heroes.
The Silvestri score is just grand and thrilling.
Marvel/Disney should allow one just one of their characters to have a signature and strong musical score similar to The Avengers!