Beyond All Reason is my favorite RTS at the moment. I enjoyed Planetary Annihilation (despite its flaws), and BAR provides the same sense of exponential growth, escalation, and strategic pivots.
One of my favorite things about the game is that it’s not ridiculously APM-intensive. The controls have a learning curve, but they enable you to “fire and forget” most of your tasks.
If you want to get a sense for the game before diving in, Brightworks does some good casting for both competitive and community-level games. https://www.youtube.com/@BrightWorksTV
Based on Drew Builds Stuff:
Based on the intersection of building and the great outdoors:
Some shots in the dark, based on exploration and documenting the unseen:
Based on Baumgartner Restoration: