I view town assaults as a technical phase of the system, a bit like playing a long endgame in chess which requires technical knowledge to hold the result. Just like long endgames are not everyone's cup of tea, neither are town assaults.
David Murray wrote a Daily Content Tactical Assault Advantage in 2013. The idea could be reworked to apply to 4th edition.
http://www.avalanchepress.com/PG_AssaultVariant.php
From my perspective, assaults play better opposed because you're trying to impose your will on your opponent. I often male different decisions in opposed games than when playing solitaire.
I would not be interested in a Streets of Stalingrad game at the PG level.
