To be honest, if you have experience in the P135 or P121 world to build that 6000 hours worth of TT and a work history that spans a few different jobs then I doubt that listing CFI would do much good - but I've never been on an airline hiring board either - so it is just my .02 cents.

I agree with the other poster though that mentioned that you still have a CFI certificate - it is just inactive at the moment. You could list it any numbers of places on a resume and put (Inactive) next to it. Absolutely accurate information.

USMCFLYR