Unnecessary and not good for the gameplay.
"Shooting out groups by blocking them from a system" has become a thing again.
Also, your vote removes the win-condition for transports. You make it to base, you live.
Talking about "transports as pvp assets" is as wrong as it gets as long as "normal transports" are referred to. Pelican and other small dodgy turret-steer transports are more like mini gunboats.
Plus: transport firepower + durability is overestimated. I should know, as likely one of the most-obesessed transport players.