Predefined rescaling options

It's about the only thing I think that doesn’t work well - there is something fundamentally wrong with the scaling/starting point when creating new boards that confuses everyone or creates problems, I think this needs a lot of consideration - not to lose the flexibility but perhaps some options - even the ability to set the initial scaling or perhaps lock it (so only allow zooming in for instance - sometimes you need that control and not an infinite whiteboard… 

I 100% echo this. It’s the most frustrating thing about Miro. I thought the wireframe objects weren’t working until I realised that they were simply just too small to see at the scale I’d found myself at.

Similarly you end up with microscopically thin connector lines that no amount of tweaking the line thickness will make look sensible.

Being able to reset the scale would be a huge deal.

I absolutely agree, this is something that needs to be fixed.  I too found myself at a tiny scaling level where dropping new items (like an image file to upload) renders at a pixel and I cannot find it!

Resetting the scale would be massive and really help me out, I guess I would have to resize everything which is totally impractical on a complex board with weeks of work

Agree! The feature is so useful and I think not so hard to implement.