I hear ya! I don't know why they went for a canister round instead of just scaling up the 105mm M494 APERS-T. It had something like 5000 8 grain flechettes and had a fuse which could be manually set from muzzle action (like a giant shotgun) out to something like 1200m (if I remember correctly).
The TC would lase the troop concentration and give the fire command "Gunner, APERS, Troops, 800m" and the loader would set the fuse before loading the round. That allowed you engage troops well outside of RPG range.
The 105mm howitzer version of the APERS round was used very effectively in Vietnam for base defense.
Given todays technology, I don't see why we can't field an electronically fused APERS round or an air bursting HE-FRAG round (or both....). Also, why not a thermobaric round?
good for caves, bunkers or buildings.
Heck, If it wasn't for CNN we'd probably still have a WP rounds and flamethrower tanks. You want to ruin someones day, lob a 120mm WP round into their midst or spray a high pressure jet of napalm into their building.
My uncle was a mechanized infantry platoon leader in Vietnam with 25th ID and was cross attached to an M48 Tank Co. They had 2 M132 flame thrower tracks (M113 with flame turret) and 2 M163 PIVAD SP ADA attached to them, and they said that the combination of 90mm canister, napalm, and 20mm HEI at 3000 rpm worked wonders for breaking up ambushes and making the enemy realize that maybe they had better things to go do.
Adrian