Hum people who fly twins say they are safer people in singles say they are just as safe and the evidence or lack there of can be used to support ether argument .
In the uk a Cessna 150 suitably equipt can fly imc at night why if I put SAS and or an autopilot in an ec120 for arguments sake can I not do the same ? Not PT obviously
Twins only at night for public transport looks on the face of it a sensible idea if you're over a built up area to give people on the ground better protection but A to B across open terrain seems like over kill as it's being done anyway just not PT .
Maybe a relaxation of the rules but with strict weather limits might appease both parties ? Or wait a few more years and EASA will have killed off helicopter flying and there will no longer be a problem