My only concern would be that players seem to pick up injuries during the pre season and first few games as they step up their fitness after a break. The current window arrangements mean that in these cases there is the chance to get in extra cover if needed, outside of squad improvement requirements. Maybe a solution to this is keeping a loan window 3-4 weeks into the season start (frankly I don't see why clubs cant loan throughout the season - with restrictions on number of loans at any time and ability to cancel loans i.e. 6 months means 6 months).