Need a bit clarify to my request N2, i mean behavior\impact of incoming signal during freeze, ofcourse.
Thinking out loud
All Freeze's in reverbs can be divided into two types - with mute the input signal and without muting.
In sparkverb this is "hybrid" version how I managed to understand, i.e. spectrum muted, but not completely. It would be cool to have non-muted option.

