Sorry to be the odd one out here, but I find the new site great and a vast improvement over the old one which I found “fussy” and not very intuitive.
I love the option to check the flight schedules and availability, much easier to use than having to continually search for available days. I made a dummy booking for end September and was through in a few clicks.
What I did not like though was the fare. Wow, € 17,000 in First! Unbelievable. Now looking at Malaysia, SAA via Sydney or Qatar. All much, much cheaper.