Not 100% sure what you are saying tbh, but a few things:
Maximum baseline for crafts is 122, plus +2/+3 depending on shield, and another +3 for Cooking from Hocho.
Synergy skill caps @ lv80.
There is no "crafting support" for synergy, or skill gear, or skill shields.
Synergy is not counted as a "craft" as far as anything in-game goes. That includes things like crafting foods and Kupo Shield. Only synergy-specific gear effects like from smocks and cuffs do anything with it.
We don't need synergy recipes with higher caps than current ones if that is what you are asking for, unless they are going to raise the skill cap along with them. Adding some new 81-100 might be nice for giving alternative routes for skilling up, and there are plenty of missing BST jugs for ilvl *hint hint*, but 110+ recipes would be basically pointless. If that was not what you were trying to say, mind clarifying?