Good to see Root and Master's Hammer here. Maybe you could also include one more band from the Czech Republic - Törr. They were very popular in the 80's but only in their country since their records were not distributed abroad. They were usually compared to Venom, Hellhammer/Celtic Frost and Bulldozer. Armageddon (1990) and Kladivo na carodejnice (1993 - compilation of songs from their early demos) are probably the best place to start. Both were included on 2CD Gallery together with their second and third album.
You have my +1 for sure. Very impressed by your list. I know a lot of these but the majority I haven't heard. Pretty much every album that needs to be on here that I can think of seems to be already here.
I would suggest Limbonic Art - Moon in the Scorpio though. Highly recommended that album, as it's fantastic symphonic black metal. The problem is, it's an album from 1996, so you probably won't add it (which would be understandable).