While there is some merit to what you say, there are still benefits to a 32-bit clean MultiFinder. MultiFinder itself allows you to run multiple apps simultaneously and switch between them. More RAM allows you to run more of those apps. And some of those apps can eat a lot of RAM, such as Deneba Canvas 3.5.x.Ah yes, giving us the ability to use all of that RAM that we freed up by using efficient software *and* by obtaining cheap SIMMs in today's market.
So even though my SE/30 is loaded with RAM, I could still make use of more of that RAM while in System 6 if MultiFinder was 32-bit clean. But again, it would be a real programming challenge, I'm sure!