Thank you for your feedback. It sounds like you'd like an easier way to search for and select all of the SKUs that need to be aliased under one specific product. Am I correct in assuming that your SKUs do not have similar product names? Or could that be something that you try to search for in the product catalog to return all of the required SKUs?
Alternatively, one option that may be able to assist you is if you were to go to the individual product page for the SKU that you want to keep as the main/master SKU and select the "Add SKU Alias" button. From here you can enter each SKU you wish to alias or merge with the main product. You can read more about this here: https://support.shippingeasy.com/hc/en-us/articles/209349906-How-to-Set-up-SKU-Aliases
As of now, we are still accepting all requests and feedback before making decisions on the next features to focus on. We will direct any customers with similar requests to comment or follow on this post as well. Feedback helps us to learn how many customers are interested in each feature and prioritize what we should work on next.
Tessa Hadobas [Product Manager]