Please let some knight bodies stack up.
Fun as that sounds, they would probably just get in the way and make it difficult to see the still-living enemies.
Re: Body Stacking: It took me a while, but I finally found what this was reminding me of: Nemesis The Warlock
, a very obscure C64 game that also centered around a simple room with platforms, and slaughtering the tons of guys who dropped into it.
Nemesis did have body stacking, and it was actually sort of a game mechanic; you could walk horizontally "past" bodies on your level, jump upwards past them, and stand on them, like platforms. Later levels required you to not only "Kill X Guys" but also make a pile or staircase of corpses tall enough for you to climb out of the arena! It's not the kind of feature you see too often, and so I think a special knight-corpse-stacking mode might be fun addition for VBB someday.
VBB is pretty awesome as is, though. It feels fairly polished already, in a retro kind of way: The controls are nice and responsive, and for me, personally, mowing down dozens of tiny knights with a lazer and beating the survivors to death with the stock of my bazooka is satisfying regardless of knockback or ragdoll physics. And giving us different objectives and metrics for our slaughtering is just icing on the... murder... cake?