Absolutely. Unnnfortunately Xenor then you're boned either way. Catalyst farming will create oversupply of every other stray material. All profits from gathering shunt to materia catalyst. We end up losing...again. Common town crafters make off like bandits with free gold walnut and flax.
Soooo....
Problem
If catalysts are made rare from gathering to give gatherers economic weight in the system, demand will drive overproduction of every other gathering material which is as big a problem as or a BIGGER problem than gear overproduction
Solutions
-Separate catalyst aquisition from primary material aquisition
-Reduce incidental material-gets
-Reduce gathering yields
-Put catalysts in ....*shudders* secondary tool gathering.
Effectively the gatherer's got to make a decision if they want to get crafting mats, or get materia catalyst. Not both. Or if both...that's going to have to be one HECK of a material production nerf.
THIS is why it is incredibly hard to get MMOs right the first time if you don't spend a ton of time playing your own product. No one thinks of these things but players. You almost can't think of everything vital to the decision alone.