Over the next 5 years, easy will need circa 600 new captains. That's assuming zero retirements, leavers, people going part time or losing their medical.
I would foresee DEC's at LGW yes. Plenty of CPs are waiting to escape LGW and this would expedite that process.
Perhaps some of our wannabe CPs should 'get a grip' and improve their analytical skills before their command course. This would not represent a threat to your career and would make a huge difference to those affected at MON.