Re: Bow & Arrows separately.
I realise that I am coming to this very late in the day but I have a thought that you might want to consider.
How about buying the bow as a the main power?
Heavy bow: 2D6 RKA, real weapon, OAF (Bow and arrows)
Now when you have a heavy bow and arrows then you can do 2D6 RKAs.
You can change the damage a bow does simply by defining the damage that you wish arrows fired by the bow to do. This means that any arrow you pick up will do the same damage from the bow.
Now you consider arrows. An arrow that does 2D6 RKA when fired from a heavy bow is probably only worth 1/2D6 when used as a dagger. So you might build an arrow as 1/2D6 HKA, real weapon, independent. This doesn't matter when it is fired from the bow but you are firing a focus that may provide your enemies with a weapon when it gets there.
So what about armour piercing arrows. I think these could be built as multipowers: slot 1 - HKA as before, slot 2 - NPA (AP) bought for the heaviest bow they could be fired from. They could also be bought as two powers - more expensive than normal arrows but so they should be.
You could also build arrows that added to the damage of the bow.
No handwavium required anywhere and good compounded powers that can be well defined in your power pool.
What do you think??
Doc