I’m guessing players will prefer flying over the mountains over climbing after the trailer unless Hello Games adds some interesting mechanics to climb.

Just use your pen and paper.

Orion Browser should do fine with WebExtension support (from both Chrome and Firefox add-on stores) until Mozilla steps ahead.

There are lots of options for RSS clients that supports 3rd party synchronization services like Feedbin, Feedly, FreshRSS (selfhosted AFAIK). I prefer NetNewsWire client for both macOS and iOS as it supports Feedly integration.

Couldn’t find any pleasant looking RSS client on Windows but I got used to browse Feedly in my browser daily instead.

For the organization and synchronization, I have no issues with Feedly so far. But if you’re looking for something else, there are lots of client and service options that can suit you better. (Try searching “RSS” on GitHub)