I don't use this (so shut up then)...but no doubt different users want different aspects.

Progress would be more likely if the required aspects (that are missing in core ZC) were highlighted and could be worked on in smaller chunks.
For example I did a plugin to batch update orders yonks ago: https://github.com/torvista/Zen_Cart-Batch_Order_Update (probably needs some tlc now , which it won't get unless requested).

Maybe the functionality you want is in another dusty plugin that is easier to fix-up than the beast that is Super Orders.