i hope this "Guild decay" is not only away in this thread but dead as an idea overall. This would be a bad decision.
Most "fun" i have with crafting is on new chars to craft them teal gear which is really good if you are in the lower level area (although oyou are only allowed to make one per week, this could be lowered to 3 days). This gives a real push for the chars. Also i had very much fun to build a LI Weapon, especially on level 65/75/85/95 etc with the OLD system.
I'm not sure how this works out with the new LI-System, but the fun of that is gone.
Personally i think the crafting system isnt that bad in the game, also that it needs a lot of time to get the "good recipes" in the past with guild profession.
Nothing wrong at the system imho.
I'm not sure if we need a complete overhaul of the system, and also when i think of some ideas we got, i'm also not sure if we should looking forward to the overhaul starting with the Angmar Expansion. But maybe i'm wrong.