[Suggestion] Chainsaw Modes

+1, thinking I don't really use the leaves, and because of the needs of sapplings (especially for rubber tree).

The only other mode I want for chainsaw is silent mode. I hate it sound while I switch tools.

How about two alternative modes: drop-leaves-mode, and drop-extra-saplings mode. You either get leaves, which can be used for recyclers or plantballs, or extra saplings which can be used to plant new trees or used for fuel in of themselves. That way if you're propagating a forest or a plantation, you switch on extra-saplings and get more trees to plant, and when you're tree farming for fuel you switch on leaf mode and get leaves you throw in your recyclers to make random stuff.

Although personally I don't use my chainsaw that much anymore, I've got a wonderful Buildcraft tree farm set up. Fuel it and flip the switches, and it handles both planting and harvesting.

Quote from SpwnX

Leaves can be used for scrap, Leaves can be turned into plantballs for biofuel (meh), Leaves can be turned into plantballs for dirt (place an uncompressed one inside macerator for 8 dirt)
Why add a no leaves mode? If you already use energy to destroy those leaves, use it for something usefull!

didn't know about the dirt, cool.

Quote from SpwnX

industrialcraft-2-client_1.95b.jar\ic2\sounds\Tools\Chainsaw [Open with winrar]
Delete all contents inside and have fun without chainsaw sound.

Will it help if I want chainsaw to emit sound when used on blocks but not when just held in hands?

I approve because I hate getting tall grass when killing mobs with it

Yeah, but I wouldn't use it. It's a simple enough change anyway.