Gathering tools exchange
+1 to the perma gathering tool exchange idea
unfortunately, I doubt it’ll be added. As you said, you wanted one for every character as they came out. They are making lots of money off people that do that. I will offer this suggestion to make MeGaZlo’s suggestion more enticing to Anet: able to convert one perma gathering tool into any other for the cost of 100 gems.
GW2Profits - a collection of gold-producing tools
Mystic’s Gold Profiting Guide
Forge & more JSON recipes
Mystic’s Gold Profiting Guide
Forge & more JSON recipes
100 gems for an unlimited tool skin change seems like a fair enough compromise. (Although, before that happens, I strongly suggest that something be done to address the quality imbalance between the different tools, because I can predict everybody swapping their picks to the Watchwork Pick for the bonus.)