Is it that simple? Brave has various proprietary bits, so it's possible they could maintain v2 support. Perhaps others know if this is feasible, from a technical perspective.
Until a chromium browser let's you use arbitrary extension stores, I don't think there's any fork that's divergent enough. And I haven't found one after months of searching.
I'm almost to the point of trying to do it myself.
I'm almost to the point of trying to do it myself.