KLM Cityhopper is set to retire the FK70 on 29 October 2017 - albeit a dutch spotter site claims the last retirement is as late as February 2018 (standby aircraft maybe?) - so you've got a while yet for the FK70 at Southampton.
Re: Munich, In defence to Flybe, didn't they apply for funding for a Munich (and Lyon) route before bmi ever announced it was launching it? I may be wrong?