Glad you like our browser. We are working hard to continue to add really useful features, cool stuff and more flexibility. Our philosophy is that we all deserve a browser that works in the way we want it to. This means we listen to input and gradually add the features and options you want.
I know you are a stand-up guy [0]. Have you considered working with the free software community to create a truly free and modern browser?
No-one trusts Chromium since it's filled with Google-specific bits and tweaks, even analytics. Assuming you've trimmed all of that away, releasing your add-ons as free software (e.g. GPL or BSD) would create some real traction around Vivaldi as a browser alternative.
This also avoids the "Opera mistake". If Presto had been open sourced, it would still be alive and kicking today. With Blink things are different, and I don't see how keeping a proprietary user interface is going to sustain a browser company.
Suggestion: make the core browser slim, pluggable and free, and sell extensions and infrastructure parts necessary for sync, updates etc with a GPL and/or proprietary license.
Cheers, Jon of Vivaldi