Current state of nftables (end of 2020)

Hi everyone! I have been anxiously awaiting firewall4, and knowing that bpf will be supported as a backend to nftables is amazing.
I wanted to test the firewall3, but I run into an issue with Luci, where it requires the firewall app.
Can't we add a "provides" to let other apps that depend on firewall3 know that firewall3 provides the same functionality?

Thanks!

Hi, I'm new to OpenWrt, using 21.02.
Can nftables coexist with iptables? I just want to write some tproxy redirection for nftables, without migrating the firewall.
Can I just (install and) use nftables? The wiki seems to suggest that the two is incompatible?

See above, although I haven't tried this:

(Sorry kinda off-topic, I moved my comment to another thread)