Why Hearthstone client deck editor is so clunky?

If I have interesting deck with missing card it’s not possible to “Copy” deck code and save it in my google sheet or send it to friend. I need either make couple screenshots of it and manage to save them either have unusable deck slot forever.

Second moment - why I can’t add missing cards to deck? Can’t edit E.T.C band either. Sometimes I have an idea to deck prototype for future craft and possible export it to google sheet, but I can’t do it. Why?!?

Third moment isn’t critical, but no option to filter Death Knight cards by runes. I need to use “Search” with, that I’ve found occasional:

blood:2+
blood:1+ frost:1+
blood:1+ frost:1+ unholy:1+

Please at least add all “Search” filter options page in client.

Even when I’m creating topic here - I only have 3 rows of text visible. 80% of my monitor is just black empty screen, but I need to scroll and scroll every time to re-read some part. Why again?

I’ve returned to your games after 3 years of pause, but still uncomfortable to do simple actions. Please Blizzard refactor it, you are stuck in medieval ages!!!