I got help via eMail. For documention purpose i will post the mails as Replys:
Hi Till, is speaking name the same thing as a friendly name? If so, you can utilize classifications to achieve what you're aiming for. Commonly people will pull in the raw CID into an eVar, then classify or group the values into friendly names.
Alternatively, Marketing Channels can do it for you if there's a pattern to them. Have the Marketing Channel processing rule look for a query string that starts with a certain value, and if it matches, plop it into the appropriate marketing channel.
If you'd like to provide any specific examples of CIDs you're putting into eVars and what you'd like reporting to end up as, I can give you even more specific/detailed information. Thanks!
Russ