I can add lives :c
EDIT: Tried it and all the kids on the server cried about waiting.
its not as simple as adding lives
your map is pretty large and so rounds last a while. small maps like these, people don't complain as much because round rarely last past 5-10 minutes.
then, instead of knives, add a pushbroom? i don't really know, just something so its not some click-accuracy game.
maybe a nerfed pushbroom that pushes people back only slightly.