For all these examples, I assume the main world is named world, the nether is nether, and the End is world_the_end.
Make grass (except tall dead grass) & sand fireproof
nerf_fire: blocklist: sand, grass, TALL_GRASS
Make only jungle wood burnable
Nerf fire a LOT
nerf_fire: nospread: world nostartby: op: false # only Ops can start fire or portals lightning: world lava: world, nether player: world, nether nodamageto: block: world
Walk on Lava
Note that this may also have the effect of making players invulnerable to the fire aspect of weapons and fireballs.
nerf_fire: nodamageto: player: fromlava: world, nether fromfire: world, nether
Drop More Charcoal
If you really like this charcoal drop thing, but want it to be more rewarding, you can increase the max:
nerf_fire: wooddropscharcoal: world charcoaldrop: random: true max: 10
Drop fixed Charcoal by Wood Type
If you feel that perhaps birch is more porous than redwood, you can tweak the maximums with this.
nerf_fire: wooddropscharcoal: world charcoaldrop: random: false speciesmax: JUNGLE_LOG: 0 OAK_LOG: 2 BIRCH_LOG: 1 SPRUCE_LOG: 3 ACACIA_LOG: 4 DARKOAK_LOG: 5 anydropchance: 100