Personally, I found the main theme really cringe-worthy, but everyone is entitled to their opinion.

I’ve heard that Williams did compose unique music for specific scenes, but they were cut in favor of maximizing nostalgia (which I don’t really blame, on paper linking the final battle to the rest of the story makes a lot of sense, it’s just in execution it becomes yet another callback to the originals). If that’s the case it’s not Williams’ fault, it’s the editors. But I can’t confirm whether that’s true or not.

I’d like to see more original music for the ST. The PT really set itself apart musically and I wish the ST had done the same.