To bring Handy Prem season forward by one week, and still give semifinalists a week's rest between last regular season game (weekend 9th-10th) & semis (weekend 16th-17th), you would need the 4 semifinalists to all play midweek between 3rd-9th March. From this weekend, all the 4 sides have 2 regular season games to go. Below is a useless exercise, but I'll do it anyway.
TW travel to HB & host ACFC. Either game you think is maybe possible midweek as neither TW or ACFC have many players balancing jobs, and Napier is the shortest trip TW almost have. What do ACFC care if they send a weaker side to TW, they have top spot wrapped up.
ACFC travel to TW & host WU. So WU players working only need a half day off, if reschedule midweek at Kiwitea St?
ES travel to TU & host SU. This is probably hardest games to try reschedule. Probably ES travelling to TU, is easiest if most of the young ES players are 'shamateur' footballers. Imagine yes many of the TU & SU players juggle other employment.
CU travel to WU & also travel to TU. Again possibly hard if most players at all 3 teams also have jobs, but if it's the only midweek game you have all season, surely can try to wrangle one day off. CU to TU midweek as shortest trip.
Obviously NZF staffers have looked at the above, made shark loads of phone calls and it's all too hard. Not taking into account, flights, ground availability, having to reschedule the team's other remaining games all for weekend 9th-10th as well etc etc etc