OpenWrt 20.xx is coming

… with DSA, WPA3 and SSL/TLS support by default.

https://openwrt.org/docs/guide-developer/20.xx.major.changes

https://openwrt.org/docs/guide-developer/releases/goals/20.xx

what is the impact of DSA?

Better support from OpenWrt team.

you mean vlan config from some GUI? e.g. as seen here