I'm not an expert by any means, but wouldn't it make more sense for new promos and content drops to be added on a Monday? Servers are already struggling due to added log-ons for WL so no need to increse the pressure.
Plus, there must be alot of gamers like myself who don't bother with Fifa until a Friday as WL is now the only thing i play. Squad Battles are dull as hell and rivals is unnecessary when you auto qualify. It would give added incentive to play midweek and complete new objectives. I'm not sacrificing WL game time to do objectives.
Just makes sense to me.