The shows you mentioned are perfect examples of musicals initially derided that developed the over used "cult following' It will be interesting to see what happens to Sunset after the cast recording. I remember how many people initially hated Sunday in the Park and Sweeney Todd when they first opened (I'm not comparing Sunset to either of those in quality ) Frank Rich a man whose opinions I greatly value said:
Don't be a theatergoer who two years, or ten, from now "wished" they'd been there. @FlyingSunsetBwy
is a brilliant culmination of James Lapine's work in "Twelve Dreams," "Sunday in the Park" and "Into the Woods."