CUL:

Currently, CUL has 5 2-star recipes in Stormblood. Most of the food stat combinations are very undesirable. There is almost no incentive to become a CUL specialist and the potential earnings are extremely small compared to other crafters.

ALC:

ALC is the complete opposite of CUL, it is the best and most profitable crafter. It has created the mats for every set of gear, every patch. It also creates Potions for raids, which are in much higher demand than food. This is because you may only use 2-3 food a raid night while spending 30+ potions in the same time.

For these reasons, I believe removing these two crafters from the specialist formula will better balance crafting as a whole. If not, better balancing needs to be considered to increase CUL usability, while decreasing ALC demand.