Jimlock
Adventurer
A +4 Composite Longbow would not be among them, as it costs over 32K.
No. But I could get some lesser bows (+2s or +1s) and other great stuff instead!! "Something of Flying" would be great wouldn't it?
But this debate is pointless because a) A feat has no price, no matter your quote & b) The Bone Bow as you said yourself is probably not what you thought it was.
Not in the real world, no. However, we play a game where you can carve out tunnels in solid rock with longswords. (And which seems to lack mechanics for breaking parts off of weapons other then, perhaps, by using Sunder.)
You know very well that this sort of logic does not help decipher the rules of the game.
Just because you CAN become superman in the game and fly, it does not mean that you can take any power, feat or spell and say:
"Here it doesn't say I can't fly! So I can use the power to fly!"
So for our example: Just because in D&D characters can do incredible stuff does not mean they can melt rock at will by default.
Moreover the text does not specify how this whole thing works mechanically (by providing rules)... which means that RAI is the only way to go. So, unfortunately for your game abusing thirst, logic HAS to come into play.
Alter Self states:
"You do not gain any extraordinary special attacks or special qualities not noted above under physical qualities, such as darkvision, low-light vision, blindsense, blindsight, fast healing, regeneration, scent, and so forth."
So the text you quoted from Polymorph overrides that.
I'm not going to feverishly take a side here, but I remember reading quite a few threads on BG, GITP... and here, that it all comes down to whether the attacks are considered natural or not... and that in case of "more hands for more manufactured weapons" Alter Self's restriction takes precedence...