I think you must consider while Atrex 23 is still in BETA version to add the variations. You are losing a lot of customers by not having the most important faction of a stock control and later on at an eshop (since you integrated with Eshop Platforms)

If a business in the following categories , Clothes, Moto Accessories, Shoes and any business in variation field will find it extremely difficult to create 20 different SKU for the same product. Imagine have a t-shirt in 10 colours, and have it in S M L XL XXL XXXL XXXXL how many SKU you will create. You have still time to consider this now and better delay your Atrex 23 a few months than losing so many customers from so many different fields. Personally i can suggest your products to so many of my customers.