Yes, it will be a difficult act to balance the needs of full cost and loco airlines in terms of expansion (or the needs that we on this forum perceive them to be) but EDI have managed pretty well to do so with long haul, full service and loco (an FR base that serves over 50 destinations in summer, not to mention a big EZY base as well!) there is no reason why BHX can't keep its full service carriers happy whilst encouraging much needed growth in loco service destinations and frequency and who knows maybe some new long haul (OK that's probably too much to hope for...).
EDI isn't 2 hours down the road from the two principal UK gateways for longhaul travel, and is a capital city with a big inbound tourist market. BHX does have a good business base however, and hopefully the new CEO won't lose sight of this in a dash to grow the "discounter" segment of the market. Not every passenger wants Aldi and Lidl service, some prefer Sainsburys and Waitrose. I'm sure he's bright enough not to!