Void form baseline as it is now sounds like it is the class’s dps cool down. Asking for it to be removed would be like me a Balance Druid asking to not have Celestial Alignment.
In addition @Irogath, the WoWhead article stated that in the last talent row, there is a talent that makes Voidform function similar to how it is now where it is a form you can maintain while your sanity drains over time, so that could be similar to what your describing?