Personally UKLad007 speaking as a francophile I would love to think that BD might start a regional service to CDG but I would think that this would go against the grain of the company's decision to pull out of CDG and any hope of such a based aircraft would surely be given to JER over CDG though given GSM announcing this route even this would seem slim.
My bet is that the spare EMB will be given to GLA, EDI, ABZ or MAN and taken up with increased frequencies to established routes
