here's a few ideas:
A new tree type for more strong/ durable weapons/foundations/items
More fishes+ fish tank?
rare ball you can find that says WILSON in blood (castaway reference, add this plz)
bait for better fish? EX no bait= mackerel and rare bait = bass?
a system where some items are more uncommon than others
BEDS PLZ
day night cycle
AND NOW FOR PEEVS:
You can barley see the leafs while floating it water (forgot name)
The shark teleports to the fogline once he dies
items fly above the fogline in distance
items floating towards you dont blend w/ fog
Otherwise a great and creative game! cant wait for more updates!