Doesn't work in first instance, but i'm curious

Snapshot of the website isn't the same as an icon in many cases...but this is it for now I guess? Can't it be customized in the developer version of Opera?

Hello. Years ago I used Opera daily, but since it became slow I changed my default browser to Google Chrome. Right now, because I was having problems playing videos on Chrome I tried Opera again and it turned out to be very fast and 'light'-using compared to before. I was also surprised by the possibility to pop-out videos

But on Chrome I was using "Modern new tab bar", an extension. I was looking for something like this for Opera but I don't think this is possible anymore? Is it somehow (if necessary in the developer-Opera) possible to change the speed dial tile-size, add icons to speed dials and/or make speed dial tiles square shape? It would be disappointing if I had to stick to Google Chrome because the speed dial tiles.

Thank you. Maybe in the future

Yes but i work very often with Opera on the right side and f.e. Word or Excel on the left side.

When using Opera in splitscreen, the Menu-icon is taking much more space than i want to.
The whole above bar, marked as yellow in the below image, is useless then.

Can this be fixed? Can I hide the Opera menu button in those cases or something?
https://i.gyazo.com/923a6e2ee85865483bc3c51803b93b2b.png