This is something I have been considering. Like many on here, I have more lenses than I need, some I have only used once or twice. My FF typically has a 24-105 F4 stuck on it. But I have my macro set up, OM1 and 90 mm attached to my nisi rails constantly, so I was considering the Olympus 12-100 F4 as my one lens solution for my M43rds.
Then I saw the 40-150 F2.8 and now I have GAS