This idea has probably already been proposed in one form or another but I am way too lazy to crawl through all the forum to confirm that. So here is my idea.
All the threads I have seen on arty have been based on the
self-propelled model of arty like the flail but the primary model for field artillery in real world armies is the
towed crew-served weapon. So my thought is to use this as the primary model for conversations about arty in PS2. Rather than simply being an oversized tank that can be driven, deployed and fired by a single player, artillery would be more like it has been throughout its history, it would require a whole squad to man and operate and it would take more than a few seconds to set up. A towed M198 155mm howitzer requires 5 minutes or more to deploy and requires a crew of between 5-8 to fire and that's not including all the support personal, communications, fire direction control, forward observers, ammo supply drivers, etc. This model of artillery creates a scenario in which artillery could only be deployed by a large group of players all working together.
Now I don't really care one way or the other if we have arty in PS2 or not. What I am saying here is that we shift our model when discussing the possibility of arty away from the flail and toward the classic model of field artillery as a gun towed into a position by another vehicle, deployed and manned by a crew rather than an individual.