  The Tunneling Potential Formalism was introduced to calculate the tunneling
actions that control vacuum decay as an alternative to the standard Euclidean
Formalism. The new approach sets the problem as a simple variational problem in
field space with decay described by a tunneling potential function $V_t$ that
extremizes a simple action functional $S[V_t]$ and has a number of appealing
properties that have been presented elsewhere. In this note I discuss several
instances in which this $V_t$ approach seems to give more than one would have
expected a priori, as the following: the $V_t$ describing the decay is a
minimum of the new action $S[V_t]$ rather than a saddle point; the decay of
AdS, dS or Minkowski vacua are governed by a unique universal $S[V_t]$ which
also gives the Hawking-Moss instanton in the appropriate limit; physically
relevant solutions beyond the Coleman-De Luccia (CdL) bounce, like
pseudo-bounces or bubbles of nothing (BoNs), show up in a straightforward way
as generalizations of the CdL bounce, with the correct boundary conditions; in
cases for which the Euclidean action calculation requires the inclusion of
particular boundary terms (like for BoNs or for the decay of AdS maxima above
the Breitenlohner-Freedman bound) $S[V_t]$ gives the correct result without the
need of including any boundary term.
