I didn't look into it, so I have no idea why they are going to try the 24hr thing again, but for sure it isn't because we lack pilots. On the A380 we are not limited by minimum days off, but by flying hours. Reducing the layover by a day will give them an extra day in DXB, but the hours won't be affected, so it is useless.
I think it's just reducing layover cost (hotel and allowances). Beancounter stuff...