Thanks for your Reply oosyrag
With C3 you got the new Array Editor which generates a JSON File in the Editor that you call upon and load into an Array via AJAX. So basically i'd just need to be able to edit the JSON as a CSV or just in a Spreadsheet Software like Google Spreadsheets and reupload it again but i'm not sure how to go about it without breaking the JSON.
Since the CSV Plugin was mainly for the convenience of editing Data in a Spreadsheet for me, with the new Array Editor i wouldn't really need it unless there's no way to get the Data out of C3 into a CSV or Excel and back again...
Maybe Ashley has some advice?