Withdrawal of the AF BRS-CDG route wouldn't surprise me greatly.
* For short-haul (CDG, and Europe), AF's fares ex-BRS are usually ~£100 more expensive than ex-LHR. EZY will be caning them to death on BRS-CDG, and they'll be shooting themselves in the feet on BRS-CDG-Europe Short-haul.
* For long haul, KL-AF are quite happy if you route via AMS instead. CDG is a lousy hub, and AMS keeps the money in the family.
EZY's interest in capturing the business flier is going to hurt all the 'traditional' airlines who provide connecting flights and interlining bags, and all the other things a *network* requires. Too substantial an EZY presence will diminish BRS's *network* connections, and we'll end up having reduced short-haul and long-haul journey options ex-BRS.