I think that butterflies should most definitely be added to the game as another cool passive mob, along with it 3 plastic “lego” cog wheels should be scattered on the map. The player should be able to find one and learn the idea for a spring loaded glider, meaning when it’s built using the power of cogs, spider silk and other materials the contraption gives the player a boost upwards with a few flaps of the wings than the ability to glide with the lift achieved. The device could use spider silk and a few second wind up to reset. 

I agree another glider option other than the dandelion tuft should be added, and ones with different abilities, i.e the tuft simply slows decent, a butterfly or moth glider allows you to travel across greater distances, or insect wings with more maneuverability.