I think starter kits in normal blockheads should differ between worlds.
Like for example you spawn with shovel, (fruit) and a basket.
Well lets say in another world you spawn with a pickaxe, (fruit) and a chest.
That is what i mean. it is a small change but it could come helpful sometimes.
Any flint tool would be able to spawn in your inventory and chests would have a 20% chance of spawning in your inventory.