I would think it would be worth trying. Only issue I can think of is no way to clear the bodies. Eventually they would pile up and you have to worry about Walkers climbing over them to the level of the walls.You've got a town full of people... just rotate. Rig it to a pully system even. Its a ranged weapon you can use from the wall with unlimited ammo.Long spears is a good idea too. Might be harder to rupture skulls from that angle though.Lifting that thing up over and over again? I mean, seems like you may as well kill some of them, not like the zombies are going to change their mind and be cool or anything, but I dunno. Leading a few away at a shot, killing them with a longer range weapon still the play.I was thinking about how to kill a lot of them. Fire is bad cause it would weaken the wall. Too many really for bullets.Yeah, it would take awhile, but make something like a cinder block tied to a rope and just keep dropping it on skulls and retrieving it. There is no certainty that anyone is coming to pied piper them away anytime soon.
Cinder blocks (if they have any around) or bowling ball or whatever on a rope is genius.
None of these is an immediate solution. It would take weeks to kill all of these zombies. But, they've got food stockpiled. They could get it done.
Seems better than doing nothing and hoping for Sasha, Abe & Daryl to come back.