In my experience, 100% of customer have products and prices on the same table, and they would like to import those two informations at the same time, instead of import products and then price items. Very often imports fails because of format of files, names, spaces etc. So the experience for the customer is very bad.

Once the catalog set up, a lot of customers would like to change all prices of all products of a pricelevel record at once. For exemple: they should be able to add 1% to all price items of that 'pricelevelid' every year or whenever they want just by selecting a percentage or a number and clicking on a 'update prices' batch button.