Lvm could be the way to go. Start with the minimum amount of partitions (i.e. / and /boot and swap as lv, maybe efi as a real partition). Add additional lv later if/ when you need them. You can always re-size a partition and the wrapping lv when you want to re- distribute storage-space.

I never needed more than these partitions. But that is just my use case.

Edit: oh. Missed the Multi boot point. Forget what I wrote. :)

It wasn’t meant to deliver a solution. It’s an opinion (as in a piece of my point of view).

It’s just not the right way to go in my opinion. (And yes I understand the reasons why people choose what they choose. )

You seem ambivalent about the topic. I understand your arguments, but I don’t agree with your solution. That doesn’t need to bother you. We probably have very different requirements for transportation.

I live in an area where I don’t need a car to get where I want to - bike, bus and train are sufficient. And I don’t normally need to transport so much that I need a car. And if I need a car I get a rental for a short time.

Sometimes I shake my head a little in disbelief because I find the trend towards more individual transportation within large cars concerning. But then again my lifestyle isn’t for everyone and who am I to judge? (But I’m entitled to my own opinion. ;)

Just get an even bigger car, it will keep you safe from those.