Damper node: avoid damp from 0 to 1st val

attached is a patch which shows my idea on how to avoid the damper node to damp(slide) from 0(in my case -2) to the first given value. the filter time of the damper is set to 1 when the second value change happens.
has anybody an idea how to make this intelligent and more sophisticated?
thanks in advance!

AvoidDamp01.v4p (13.2 kB)

use the new module damper (animation jump) which comes with beta21!