Scheduling the staging, and more importantly, scheduling the commit, are the parts that matter most (at Consumerinfo). The Flow Control feature is nice, but we've never used it for anything. I don't know that any of the deployers (at CIC/ECD) schedule simulation. It's probably not a showstopper if it buys other (or more reliable) functionality, -especially- if it buys more reliable simulation.
Until we keep the hability to separate the scheduling of the staging from the scheduling of the commit, it should be OK for my customer and prospect.
Deleting the advanced deploy options and give directly the access to advance scheduling is a good thing as it goes in the way to simplify the GUI.
It's not a big concern with me. It's always been a nice-to-have with clients, but as of now I don't know of any that actually utilize those features.