I'm wondering what bows will be adjusted, just the ML bows? If they get bumped to say the current Yumi level, they probably won't be made much. The slayer is an elven composite longbow so it'll be nice and slow, plus one of the specials on it needs poisoning, the other special can make the target switch opponents (not too desired if you're using a pet or dexxer combo to tank).
Depending on the chance of exceptional I might be tempted to make the assassin shortbow for the bit of hci/di or the balanced shortbow for the balanced mod (much desired for peeveepee). Since both are shortbows the only ssi they might need could be guarantee added with ash. Or you could go with yew on the assassin for 8hci and 14di
Rey~