@mixchild
1. force dark mode on all pages option is missing
That is correct. Force dark mode comes from chromium and requires more research from our side. We have reports that suggest such feature might cause flashes or other strange behavior. So we want to make sure to keep the browser healthy before adding it.
2. transparent wallpapers on speed dial have white background not gray like in regular opera
I'm afraid I don't understand what do you mean by "transparent wallpapers". Could be so kind and share some screenshots?
3. active tab is not gray, just the icon of a tab turns gray
Tabs and visibility of active tab will be part of upcoming improvements. It won't be gray, but it will be more clear which tab is the active tab.
4. Tab Islands this year
Under research. However, we don't expect to have it this year.
5. will you implement chrome 140 flag to reduce white flashes : CSS caret-animation property
Also under research. Might be a part of upcoming improvements but can't promise that.