I can recommend Vaadin[1]. It feels like a successor to GWT, feels natural for backend develops and looks similar to Swing.
A big component library is included and it offers binding for Typscript webcomponents (there's a frontend-centric variant of the framework named Hilla too).
Frontend states are held in a backend session, so it's safe for manipulations but i'd only recommend it for management UIs.
And here we are... that's why AdBlockPlus isn't reliable anymore. They started with helping the user getting rid of all the ad-ridden websites and now they are monetizing it (not that it is wrong, but there should be another way - they are crippling their product).
Currently I'm using uBlock on all browsers using EasyList blocklists on all browsers.
We have ~10.000 selenium- and htmlunit-tests, run on multiple VMs to test against our product.
Writing and maintaining tests is quite good due to a lot of helper classes, but test-execution needs ~24h.
Currently we are trying to decrease the number of ui tests and increase component tests which should run a lot faster.
IMHO the Raspberry Pi brings a lot of processing power - depending on what you'll do, that might be more than enough.
It brings a lot of addon-boards, tutorials and a good community, so it might be a good starting point.
I think it's fair to hope for a more customizable Chromium, since customizability is one of the things Opera was known for. For me personally, things like a bookmarks sidebar and more flexible tab positioning would help tempt me to switch back to Opera from Firefox.
Well there are 2 features I really miss in Chromium (which are implemented in Opera now):
* easily Add/remove websites from the speeddial
* closing the last tab won't quit the browser (this annoyed me the most)
The saddest part about that is that opera was the first browser I knew of that allowed changing the default search engine in the first place, about 13 years ago.
Yet the old Opera was (and is) much faster than chrome/firefox. User confusion is valid if those are the users you are after. For the "what is Internet?" crowd there's Chrome already, and I think there's enough space for something else.
As I understand it all browsers on iOS use UIWebView rather than their own engines. However, the Opera Coast browser on iOS has a great user interface that is different from Safari.
Furthermore "...to find his bed surrounded by police officers. Automatic weapons were pointing at his head..." - that doesn't sound like Germany. Guns are only drawn if you are visibly armed.
Frontend states are held in a backend session, so it's safe for manipulations but i'd only recommend it for management UIs.
[1] https://vaadin.com/