Product Kit Classes - Just had a brainfart relating to an issue I'm trying to find a solution too and assumed, since you could add product classes that you can add fields too in CCK, that you'd be able to do the same with Product kits... Well you can, but since there is no option of adding another product kit style, any extra CCK fields will be added to ALL product kits.
Product List Control - Instead of listing all products, it would be good if we could limit exactly which products could be added to a product kit. From an Ubercart perspective, I'd assume this could be done quite easily by limiting by product class, probably having a number of select lists rather than the current single one, and with each product kit class having the option of turning on/off a product class select list. From a flexibility perspective, some form of views integration here would be even better 
Product Kit SKU - I haven't really played with reports or anything yet, but since product kits don't have SKU's, I'm assuming there is no way of telling what products were sold as part of a kit, and which were sold individually? By adding an SKU to the product kit, you would have a direct indication of this.
Product Kit Discount - Currently, the price of a product kit appears to be the total of the contained products, and any discount given by that product kit has to be applied to a product within it. If product kits were given their own SKU, that discount could be applied to the product kit itself. By doing this, when a product kit is sold, all contained products could be sold on their usual SKU's at their usual prices, and the "discount" can be charged to the product kits SKU, giving you a direct indication of how much that product kit, or promotion, is costing you, rather than devaluing the sold stock. Depending on local laws etc, this information could then be used for tax write offs etc since it now becomes an expense 
I'll leave it that for now
Joined: 01/15/2008