ALW is absolutely one of the most talented composers of our life time, thats proven by:
JCS, witch he composed and orchestrated before he was 20
EVITA, witch is one of his smartest, and most complex scores
CATS, witch was a great successful experiment to write a show based around a series of short poems
POTO, witch is the most financially successful piece of entertainment ever created
Requiem, witch puts him in a group of very few B-way composers who have tackled classical Catholic masses(the only other one I can think of is Leonard Bernstein)
The problem I find with ALW is that it seems with each success he had, he became cockier and cockier. The work became less edgy and interesting, and became more about ALW score, by the time you get to Aspects.., and Sunset... you have 15 min musical interludes that are serve no purpose other than to have more ALW music. I feel like he went from creating shows that were edgy and original, to creating vehicles for his own music.
I Wish... Madeline Kahn could have played the Witch in Into the Woods. She would have rocked!