Bulk Supplier Price Increases

I would like a way to be able to bulk update supplier price increases within Storefeeder. Currently we have to export product data and use formulas within excel. This isn't possible when you have products with multiple suppliers / prices though because of how Storefeeder export this information within a single cell. This leaves us with having manually separate and update each supplier price. I have over 1000 products with multiple suppliers so this takes me days to work through. --- The Idea --- I think it would be great if when we export supplier information during a product export that this information be separated into their own columns. Better yet, a feature within Storefeeder which would allow us to apply a % price increase based on either supplier and / or brand. So we could select supplier A + brand B - add 5% and hit a button to update this.